Adjustable Length Putter Having a Releasable Clamp, and a Putter Fitting Kit

This claims the benefit of U.S Provisional Application No. 63/724, 198, filed Nov. 22, 2024, and U.S. Provisional Application No. 63/568,392, filed Mar. 21, 2024, the contents of which are fully incorporated herein by reference.

This disclosure relates generally to putter-type golf clubs and, more particularly, relates to adjustable length putters and putter fitting kits.

Putter-type golf clubs (hereinafter “putters”) are provided in a variety of different head styles, shaft lengths, and grip styles. A player's height, arm length, and other factors may dictate which type of head style, shaft length, and grip style is more comfortable or suitable for a particular player. During a fitting session, it is common to have the player try several different putter grip styles, putter head styles, and putter lengths to find the best fit. To provide a full array of putter options, however, would require having multiple different putters on hand, each having a pre-selected combination of the various grip styles, head styles, and shaft lengths. While some putters are known to have adjustable lengths, those conventional devices are difficult to manipulate between lengths, are overly bulky, and can obscure the players sightline along the putter shaft.

For simplicity and clarity of illustration, the drawing figures illustrate the general manner of construction, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the invention. Additionally, elements in the drawing figures are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of embodiments of the present invention. The same reference numerals in different figures denote the same elements.

The terms “first,” “second,” “third,” “fourth,” and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms “include,” and “have,” and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, device, or apparatus that comprises a list of elements is not necessarily limited to those elements but may include other elements not expressly listed or inherent to such process, method, system, article, device, or apparatus.

The terms “left,” “right,” “front,” “back,” “top,” “bottom,” “over,” “under,” and the like in the description and in the claims, if any, are used for descriptive purposes and not necessarily for describing permanent relative positions. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other orientations than those illustrated or otherwise described herein.

The terms “couple,” “coupled,” “couples,” “coupling,” and the like should be broadly understood and refer to connecting, directly or indirectly, two or more elements or signals, electrically, mechanically and/or otherwise.

The term “putter,” can, in some embodiments, refer to a putter-type club head having a loft angle less than 10 degrees. In many embodiments, the loft angle of the putter can be between 0 and 5 degrees, between 0 and 6 degrees, between 0 and 7 degrees, or between 0 and 8 degrees. For example, the loft angle of the club head can be less than 10 degrees, less than 9 degrees, less than 8 degrees, less than 7 degrees, less than 6 degrees, or less than 5 degrees. For further example, the loft angle of the club head can be 0 degrees, 1 degree, 2 degrees, 3 degrees, 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, or 10 degrees. The putter-type golf club head can be a blade type putter, a mid-mallet type putter, a mallet type putter.

Putter-type golf clubs are described herein having adjustable clamps that facilitate quickly and easily changing effective shaft length while having low outer profiles that do not obscure a sightline along the shaft. Additionally, putter fitting kits, using one or more such adjustable clamps, are disclosed herein that permit different combinations of grip styles, head styles, and shaft lengths to be assembled.

More specifically, a putterhaving an adjustable clampis illustrated in. The putterincludes a headhaving a toeand a heel. The headmay be any known type of putter head style, including a blade, a mallet, or a mid-mallet style head.

A shaftis coupled to the headand includes a shaft lower sectiondefining a shaft lower endcoupled to the head, and a shaft upper sectionprovided separate from the shaft lower sectionand extending along a shaft upper section axis. The shaft lower endmay be coupled to the headeither directly or via an optional hoselprovided with the head. The shaft lower sectionhas a toe-ward side, oriented toward the tocof the head, and a heel-ward side, oriented toward the heelof the head. The shaft upper sectionis sized to telescopically receive at least a portion of the shaft lower sectionand further defines a shaft upper endopposite the shaft lower end.

A gripis coupled to and moves with the shaft upper end. The grip has a grip outer surfacedefining a grip cross-sectional profileperpendicular to the shaft upper section axis, as best shown in.

An embodiment of an adjustable clampfor coupling to the shaftis illustrated in. The adjustable clampis configured to selectively allow the shaft upper sectionto translate along the shaft upper section axisrelative to the shaft lower section, thereby adjusting an effective length of the shaft. The adjustable clampgenerally includes a sleeve, a lever, and a compression collarthat cooperate to frictionally engage and disengage the shaft lower sectionas described in greater detail below. The adjustable clampapplies force sufficient to allow regular use of the golf club.

The sleevecouples the adjustable clampto the shaft upper sectionwhile permitting the shaft lower sectionto slide therethrough. More specifically, as best shown in, the sleeveincludes a sleeve top sectioncoupled to and surrounding a bottom end of the shaft upper sectionThe sleeve top sectionmay be relatively permanently fixed to the shaft upper sectionusing epoxy or adhesive. The sleeve top sectiondefines a sleeve top section outer surface, having a sleeve top section outer diameter D1, and a sleeve top section inner surface, defining a sleeve top section receptacleand having a sleeve top section inner surface diameter D2 sized to receive at least a portion of the shaft upper sectionThe sleevefurther includes a sleeve bottom section, defining a sleeve bottom section outer surfacehaving a sleeve bottom section outer diameter D3 that is smaller than the sleeve top section outer diameter D1, and a sleeve bottom section inner surface, defining a sleeve bottom section receptaclehaving a sleeve bottom section inner diameter D4.

The sleeve bottom sectiondeflects to selectively engage or disengage the shaft lower sectionMore specifically, the sleeve bottom sectionmay be weakened, such as by forming groovesin the sleeve bottom sectionto promote deflection. The groovescan comprise circular, square, rectangular, oval, or any other shape. As shown in, the sleeve bottom sectioncomprises two grooveswith mirrored geometry. The groovesfacilitate deflection of the sleeve bottom sectionbetween a sleeve bottom open state, in which the sleeve bottom section inner diameter D4 is sized to receive at least a portion of the shaft lower sectionand a sleeve bottom closed state, in which the sleeve bottom section inner diameter D4 is reduced to frictionally engage the shaft lower sectionFurthermore, the sleeve top section receptaclefluidly communicates with the sleeve bottom section receptacleto permit at least a portion of the shaft lower sectionto slide through the sleeveand to telescope within the shaft upper section

The compression collarof the adjustable clampsurrounds the sleeve bottom sectionand may be manipulated to selectively apply a compression force radially inwardly on the sleeve bottom section, thereby moving the sleeve bottom sectionfrom the sleeve bottom open state to the sleeve bottom closed state. More specifically, as best shown in, the compression collarincludes a collar bodyextending from a collar first endto a collar second endand surrounding most of the sleeve bottom section. The collar bodydefines a collar body inner surfaceand a collar body outer surface. A first tabextends outwardly from the collar first endand defines a first tab aperture. The first tabfurther includes a first tab free enddefining a first tab cross-sectional profileperpendicular to the shaft upper section axis. A second tabextends outwardly from the collar second endand is circumferentially spaced from the first tab. The second tabdefines a second tab aperturethat is axially aligned with the first tab aperture. The second tabincludes a second tab free enddefining a second tab cross-sectional profileperpendicular to the shaft upper section axis.

Applying force to move the first tabtoward the second tabdeflects the compression collar from a released state to a compressed state. More specifically, in the released state, the first tabis spaced from the second tabby a first tab distance TD1, and the collar body inner surfacehas a first collar diameter CD1. In the compressed state, the first tabis spaced from the second tabby a second tab distance TD2 that is less than the first tab distance TD1, and the body collar inner surfacehas a second collar diameter CD2 that is less than the first collar diameter CD2. Accordingly, in the compressed state, the collar bodycompresses the sleeve bottom sectionto the sleeve bottom closed state.

The leveris operatively coupled to the compression collarto move the compression collarbetween the released and compressed states. More specifically, as best shown in, the leverincludes a cam sectionpositioned adjacent to the second tabof the compression collar. In the illustrated embodiment, the cam sectionincludes two cam lobesseparated by a gap. The cam sectiondefines an inner cam surfacemovable between a disengaged state, in which the inner cam surfaceis in an initial position relative to the second tabof the compression collarthat permits the compression collarto assume the released state, and an engaged state, in which the inner cam surfacemoves the second tabtoward the first tabto place the compression collarin the compressed state.

The leverfurther includes a clasp sectionthat allows a user to grasp and manipulate the leverbetween the disengaged and engaged states. The clasp sectionincludes a clasp base, extending relatively linearly from the cam section, and clasp free end, extending relatively accurately from the clasp base. The clasp sectiondefines a clasp section inner surfacethat closely overlies the collar body outer surfacewhen in the engaged state. The clasp sectionfurther defines a clasp section outer surfacehaving a clasp cross-sectional profileperpendicular to the shaft upper section axis. The clasp sectionof the levermay be grasped and manually rotated to move the inner cam surfacebetween the disengaged state and engaged state.

The adjustable clampcan further comprise a receiver pin() about which the leverrotates and which can be used to couple the leverto the compression collar, as best shown in. The receiver pincan comprise a cylindrical shape that is received in a transverse apertureformed through the cam sectionof the lever. The receiver pinfurther can comprise a receiver pin threaded aperturefor receiving a screw(). The screwsecurely couples the leverto the compression collar.

A rotational stop prevents the compression collarfrom rotating around the sleeve bottom section. As best shown in, the rotational stop includes a detentextending radially outwardly from a top edge of the sleeve bottom section outer surfaceand a complementary notchformed in a top edge of the collar body inner surface. While a single detentand notchare shown, more than one detent and associated notch may be provided. An alternative rotational stop is illustrated in, in which first and second bayonet mounts,project from the sleeve bottom section outer surface, and a receptacleis formed in the collar body inner surfaceand sized to permit translation and rotation of the bayonet mounts,.

An axial stop prevents the compression collarfrom migrating axially along the sleeve bottom section. As best shown in, the axial stop includes a flangeextending radially outwardly and circumferentially around a bottom end of the sleeve bottom section outer surface, and a complementary channelrecessed into and extending circumferentially around a bottom end of the collar body inner surface.

The compression collarcan further comprise alignment indicia located on an external front surface to facilitate proper rotational placement of the shaft upper sectionrelative to the shaft lower sectionThe alignment indicia can comprise an engraved vertical line on the external front surface of the compression collar. The alignment indicia can allow for the proper alignment between the grip and the putter shaftwhen the length adjustment of the putter shaftis being performed. The alignment indicia can be engraved on the clamp utilizing laser engraving, rotary engraving, chemical etching, electrochemical etching, hand engraving, paint, or any other desired manufacturing methods.

Additionally, or alternatively, an adjustable clamp may also be provided to connect the shaft lower end to the hosel. In these embodiments, the adjustable clamp can be epoxied onto an exposed portion of the hosel. The sleeve bottom section can slide over the bottom end of the shaft. The sleeve top section can be epoxied onto exposed portion of the hosel. This configuration facilitates changing putter heads. In some further embodiments, a first adjustable clampis provided between the shaft lower and upper sections and a second adjustable clamp is provided between the shaft lower end and the hosel.

A tightening tool may be used to permanently secure the adjustable clampto the putter. In some embodiments, the tightening tool can comprise a wrench that applies sufficient torque to the screwto prevent the leverfrom opening. Locking the leverin the closed position impedes any further adjustment of the adjustable clamp, making it a fixed component on the putter, thereby allowing the putter to be used during a golf round. The adjustable clampapplies sufficient torque to prevent the shaft upper section from disengaging from the shaft lower section.

The shaft upper sectionhas a shaft upper section lengthmeasured from the bottom-most part of the shaft upper sectionto the upper-most part of the shaft upper sectionThe shaft upper section lengthcan range from 0.500 inches to 1.600 inches. In some embodiments, the shaft upper section length 123 can range between 0.500 and 0.600 inches, 0.700 and 0.800 inches, 0.800 and 0.900 inches, 0.900 and 1.000 inches, 1.000 and 1.100 inches, 1.100 and 1.200 inches, 1.200 and 1.300 inches, 1.300 and 1.400 inches, 1.400 and 1.500 inches, or between 1.500 and 1.600 inches. The shaft lower sectioncomprises a shaft lower section lengthmeasured from the bottom-most part of the shaft lower sectionto the upper-most part of the shaft lower sectionThe shaft lower section lengthcan range from 0.350 inches to 1.250 inches. In some embodiments, the shaft lower section lengthcan range between 0.350 and 0.450 inches, 0.450 and 0.550 inches, 0.550 and 0.650 inches, 0.650 and 0.750 inches, 0.750 and 0.850 inches, 0.850 and 0.950 inches, 0.950 and 1.050 inches, 1.050 and 1.150 inches, or between 1.150 and 1.250 inches.

Various materials can be used to form the components of the adjustable clamps,,,described herein. For example, each of the sleeve, compression collar, and lever can be formed from an aluminum or aluminum alloy. In some embodiments, the sleeve, compression collar, and lever can be formed from nylon, thermoplastic polyurethane (TPU), or a thermoplastic elastomer (TPE). In some embodiments, sleeve upper section can be formed from an aluminum material, and the sleeve bottom section can be formed from a plastic material. In some embodiments, the sleeve upper section can be formed from a plastic material, and the sleeve bottom section can be formed from an aluminum material. The receiver pin can be made from an aluminum, an aluminum alloy, a steel, or a steel alloy. Further, the screw can have a metalwood torx head formed out of a titanium, a titanium alloy, a steel, or a steel alloy. An adhesive film can be applied to the exterior surface of the screw to enhance locking and sealing properties. The adhesive film can increase the surface friction between the screw and the receiver pin, creating a more secure connection while still being removable. The adhesive film can comprise a microencapsulated epoxy, such as 3M 2353 blue fastener adhesive, or ND Microspheres 583S.

An adjustable clamphaving a reduced profile lever is illustrated in. The adjustable clampis similar to the adjustable clampdescribed above, and like reference numerals are used for similar components. The primary differences in the adjustable clampare in a compression collarand a lever. More specifically, a collar body outer surfaceincludes first and second indentsfor receiving an inner cam surfaceof the lever. The inner cam surfaceincludes a more prominent cam projectionand an adjacent cam recessto accommodate the indentsand avoid interfering with the collar body outer surfaceas the leverrotates.

An adjustable clamphaving a leverthat facilitates manual manipulation is illustrated in. The adjustable clampis similar to the adjustable clamps,described above, and like reference numerals are used for similar components. The primary differences in the adjustable clampreside in the lever. More specifically, a clasp free endof the leverincludes a finger tabthat angles radially outwardly to create a finger tip gapbetween the clasp free endand a collar body outer surface. The finger tip gapbetter enables a user to grasp and rotate the lever.

As best shown in, the adjustable clampis positioned and sized reduce interruption of a sightline along the shaft as a player executes a putt. More specifically, the shaft upper sectionis oriented relative to the shaft lower sectionso that the clasp section outer surfaceis oriented toward the toe-ward sideof the shaft lower sectionAccordingly, the first and second tabs,of the compression collar, which are located opposite the clasp sectionof the lever, are oriented towards the heel-ward sideof the shaft lower sectionThe first and second tabs,generally extend radially outwardly a greater distance than the clasp section outer surface, and therefore are obscured by the grip and shaft. Furthermore, the clasp sectionof the leverand/or the first and second tabs,of the compression collarare sized so that a grip cross-sectional profileobscures most of the clasp cross-sectional profile, first tab cross-sectional profile, and second tab cross-sectional profile. In some embodiments, the clasp sectionof the leveris sized so that the grip cross-sectional profileobscures an entirety of the clasp cross-sectional profile.

An adjustable clamphaving a leverwith a reduced profile is illustrated in. The adjustable clampis similar to the adjustable clamps,,described above, and like reference numerals are used for similar components. The primary differences in the adjustable clampreside in the lever. More specifically, the leverhas a tapered clasp free endto more closely conform to the collar body outer surface, thereby to further reduce a clasp cross-sectional profile.

According to additional aspects of the present disclosure, a putter fitting kitis provided that facilitates quick and easy putter fitting. As best shown in, the putter fitting kitdescribed herein can comprise one or more putter heads, one or more putter shafts, and one or more putter gripsthat can be used together to increase the available combinations during a fitting, while mitigating the number of parts on hand. The one or more putter headscan comprise a blade style putter head, a mid-mallet style putter head, and/or a mallet style putter head. Each putter gripmay be coupled to the putter shaftby an adjustable clamp, which may be any of the embodiments of adjustable clamps,,,described herein. Furthermore, each putter headmay be attached to a bottom end of the shafteither directly or via another adjustable clamps,,,described herein.

The one or more putter gripscan vary in size and shape. The grip profile shape can be defined as the cross-sectional shape of the grip when viewed from above. The grip profile shapes can include a circle, an oval, a flat oval, a pistol, a flat wide, or a mod pistol. The one or more putter grips can also comprise a plurality of sizes measured circumferentially around the grip. The plurality of sizes can range from an undersize grip, a midsize grip, a standard size grip, an oversize grip, or a jumbo size grip.

To utilize the adjustable clamp, a desired putter grip is selected from the series of grips. Once the putter grip type is selected, the adjustable clamp can be provided at the bottom end of the grip. To insert attach the grip to the shaft and head, the lever is rotated to an open configuration. In the open configuration, the sleeve bottom section has sufficient clearance to receive the putter shaft. The putter shaft can then be inserted through the adjustable clamp until the desired effective putter length is obtained. The lever in then placed into a closed configuration to secure the putter shaft in place. In some embodiments, where the adjustable clamp is located at the bottom end of the putter shaft, a similar process can be followed to change the putter head.

Further, the putter shaft can comprise a plurality of length markings engraved on an exterior surface of the shaft, preferably a front exterior surface of the shaft. The plurality of length markings can aid the fitter, or a person using the adjustable clamp to accommodate the putter to the desired length without the need of a ruler or measuring tape. The plurality of length markings makes the process of adjusting the adjustable clamp easier and more efficient. The plurality of length markings can be engraved utilizing laser engraving, rotary engraving, chemical etching, electrochemical etching, hand engraving, or any other desired manufacturing methods. The plurality of length markings can be engraved using vertical and/or horizontal lines that can also further aid in ensuring the grip is placed straight with respects to the putter head. In one exemplary example, the first horizontal line can comprise a 31 inch marking, followed by a second horizontal line representing a 31.5 inch marking, followed by a third horizontal line comprising a 32 inch marking, followed by a fourth horizontal line representing a 32.5 inch marking. In some embodiments, the plurality of length markings can range from 31 inches to 39 inches. In other embodiments, the plurality of length marking can range from 25 inches to 32 inches.

The fitter can determine the type of hosel that can be beneficial for a player by analyzing their typical swing path. In one example, a double bend hosel can be beneficial for a player whose swing path is straight. This hosel provides the player with face-balancing and minimal rotation during the putting stroke. In another exemplary example, a short hosel can be beneficial for a player whose swing path leans towards an arc shape as this hosel provides a toe hang. The fitter can use the adjustable clamp to interchange putter heads. Fitters can then observe how the player adapts to each hosel and head construction to make recommendations and adjustments.

Varying putter grip shape and size helps coordinate the players stroke movement with the putter. In one example, an oval shape type of grip can be beneficial for players that keep hands close together for a stable and solid grip. In another exemplary example, a pistol shape type of grip can be beneficial for players who prefer their hands in an extended position that feels more comfortable and natural. A fitter can recommend a player to focus on the feel of the grip and how it affects their swing. The adjustable clamp can make this possible by allowing the player to test grips with different sizes and shapes to feel the difference with each putting stroke.

The adjustable clamp can provide a variety of benefits during a fitting session. The adjustable clamp allows the fitter to adjust, in real time, the effective putter length while performing a fitting session. This allows the fitter to accommodate players of different heights, or putting postures. The adjustable clamp can be actively adjusted during a fitting session and allows the fitter to quickly analyze the players performance with different putter configurations.

More specifically, the adjustable clamp can allow the fitter to actively change between hosels, putter heads, and grips. The ability to make these changes quickly and efficiently can allow the player to actively give feedback to the fitter with every putting stroke. This allows the fitter to not only look at the measurable stroke metrics, but receive immediate and direct feedback from the player on comfort and feel. With this feedback, the fitter can modify the putter with different components more suited to the player's preferences.

To evaluate the efficiency and usability of the adjustable putter clamp, a survey was conducted with the assistance of two golf fitters. The golf fitters were presented with a series of questions designed to gain deeper insights into how the adjustable putter clamp enhances the fitting process, as well as how it is perceived by golfers undergoing a fitting. Three questions were asked to analyze the need for an adjustable putter. They were as follows: Does the adjustable putter clamp improve the putter fitting process compared to traditional methods? Do golfers typically respond positively to changes in putter height or grip? Have you found that beginner golfers benefit more from length and/or grip changes over experienced golfers?

Based on the first three questions presented to the participants, it was unanimously found that the adjustable putter clamp did improve the putter fitting process when compared to traditional methods. The participants also noticed that the golfers undergoing the fitting responded positively to the changes in both putter height and grip. Furthermore, the participants also found that beginner golfers more often benefited from the lengths and/or grip changes when compared to experienced golfers.

Further in the survey, the participants were asked to rate on a scale from 1 to 5 how much performance improvements were noticed in the respective categories after using the adjustable putter clamp as a fitting method. For the consistency category, both participants rated the method as a 4, which demonstrated significant improvement. For the distance control, both participants rated the method as a 1, which demonstrated no noticeable improvement. For the accuracy category, both participants rated the method as a 4, which demonstrated significant improvement. Finally, for the stability of the shaft category, both participants rated the method as a 1, which demonstrated that the shaft had no movement after being adjusted with the putter clamp.

Ultimately, the participants were asked to rate on a scale from 1 to 10 (1 being extremely hard, and 10 being extremely easy) what they would quality the case of use of the adjustable putter clamp as. Both participants rated the adjustable putter clamp system at an 8 out of 10. The results of the survey align with the theory that the adjustable putter clamp system improves case of use and variability.

To evaluate the impact of adjustable parameters influenced by putter length, a test was conducted to gather and compare data between a standard putter head (SPH) and an adjusted putter head (APH) that utilized the adjustable putter clamp system. Three test subjects participated in the study to ensure a diverse data set. The first subject was a female with a height of 5′1″ and a wrist-to-floor length of 30.5 inches (hereafter “Subject #1”). The second subject was a male with a height of 6′4″ and a wrist-to-floor-length of 38 inches (hereafter “Subject #2”). The third subject was a female with a height of 5′4″ and a wrist-to-floor-length of 31.5 (hereafter “Subject #3”). Each test subject performed 5 putts with each putter, a first standard putter with a length of 35 inches, and an adjusted putter with an adjusted length of what the test subjects currently play with. Subject #1 putter was adjusted to 32 inches, Subject #2 putter was adjusted to 36 inches, and Subject #3 putter was adjusted to 33 inches.

The fitting software utilized in this study systematically collects various putting parameters based on the unique putting strokes of each subject. These parameters are typically analyzed during a fitting session to determine the most suitable putter head that aligns with the subject's individual stroke mechanics and overall performance needs. In addition to evaluating these parameters, the software compiles the collected data to generate a predicted putting handicap, providing a quantifiable measure of the subject's putting proficiency. This predictive capability aids fitters in selecting the most appropriate putter head while allowing for adjustments to specific stroke-related parameters, ensuring an optimal match tailored to the golfer's technique and performance objectives.

Table 1 shows the most important parameters obtained from the fitting software that are considered during a putting fitting to properly fit a putter. Impact and setup loft angles, as well as impact and setup lie angles are key variables that have a major impact on putter distance and control. Subjects #1 and #3 had the greatest differences in both impact loft angle and setup loft angle, with an over 3 degree difference. This key variable significantly influences the launch angle of the golf ball off the clubface, aiding in lifting the ball out of the slight depression formed when it comes to rest on the green. Additionally, the loft of a putter should be properly aligned with a golfer's hand position at impact to ensure a smooth and consistent roll.

Subjects #1 and #3 exhibited the most significant variation in both impact and setup lie angles, with a difference of approximately 1.5 to 2 degrees. Lie angle directly influences the extent to which a golfer may deviate from the center of the putter face during a stroke. Additionally, it determines whether the toe or heel of the putter is elevated at impact, which can cause the putter face to deviate from the intended target line.

Being fitted for an incorrect putter length, as previously discussed, can impact all of these parameters, ultimately influencing a golfer's performance. The combined effect of these factors can have a direct impact on the putter stroke mechanics, creating directional inconsistencies and challenges in speed control while putting. Furthermore, these parameters also affect how the putter head rests at address, potentially making the putter visually unappealing to the golfer and creating discomfort during setup.

Overall, it was observed that Subjects #1 and #3 experienced significant improvements in their putting handicap when using a properly fitted putter length compared to the standard 35-inch putter commonly used in putter fittings. Their results indicated that even a 2- to 3-inch variation in putter length had a substantial impact on their overall performance. This improvement can be attributed to the fact that both subjects #1 and #3 were shorter individuals, for whom a longer putter poses challenges related to posture, setup, and stroke consistency.