This model is becoming the most intriguing Titleist GTS driver

Welcome to Fully Equipped’s weekly tour gear report. Every Friday of PGA Tour weeks (plus other times, if the news calls for it), GOLF Equipment Editor Jack Hirsh brings you some of the biggest news about golf clubs on Tour, including changes, changes and launches.

In what is usually a quiet week for gear shifts this week in the unique Zurich Classic team format, one of Titleist’s new leaders is starting to raise eyebrows — and it’s not the model you’d think.

With a tough spot on the schedule and a different format, the Zurich Classic typically offers a window into the world of equipment for some of the PGA Tour’s grind as they try to capitalize on a rare start. You can view some of the fantastic things we’ve seen here in the past year.

This year is more of the same, with only a few players making major gear shifts. However, there is a trend involving the Titleist GTS drivers, who have now been on Tour for five weeks. It looks like the GTS4 will be little more than a stand-alone driver in the GTS lineup.

This week, three players put the new “4” model into play, which already surpasses GT4 usage for the entire season. Two different players used the GT4 in one event each last season, Vince Whaley at the WM Phoenix Open and Thomas Rosenmueller at the Farmers Insurance Open.

For the past several generations, the “4” model has been the most compact driver in the Titleist family, usually coming in under the USGA’s legal maximum limit of 460cc at 430cc or 440cc. It served a unique purpose as a low spin option for a player with a negative angle of attack distribution with a driver and apparently very high speed.

In recent years, pros have moved away from more compact, low-spinning models in favor of more forgiving heads. Slowly and slowly, Titleist’s “4” model has fallen out of favor on the PGA Tour.

That doesn’t make it a bad driver, and it fills a unique niche that just isn’t needed by many players, similar to the company’s CPO golf ball offerings.

But since the launch five weeks ago, four players have already put the new GTS4 into play, doubling the GT3’s usage. Zac Blair, Davis Riley and Frankie Capan III all added driver this week, joining Patrick Cantlay, who debuted last week at Harbor Town.

We still don’t have official details on the new driver from Titleist, but thanks to an interview Riley did with GolfWRX at Zurich Classic, we know that the GTS4 is “not as small” as the GT4. Whether that means it’s up to 460cc like the GTS2 and GTS3 remains to be confirmed.

But what is clear is that the GTS4 is now a legitimate option within the Titleist lineup, and potentially one that could catch a lot more use than it has before. For more, we await the official details!

What to watch for the next three weeks

With the addition of next week’s Cadillac Championship, the PGA Tour schedule now has a back-to-back Signature Event on the eve of the second major of the year, which is why many of the biggest names took this week off in Zurich.

After seeing many clubs built specifically for Augusta National over the weeks leading for the Masters, what can players look for in Aronimink for the PGA Championship?

That work is underway now, with many pros taking the week off from New Orleans and some also leaving next week’s Cadillac Championship in Miami.

As a classic Donald Ross design, Aronimink will challenge players with multiple well-placed and likely heavy bunkers.

Last year’s PGA Championship in Quail Hollow saw a 7-wood and 9-wood mani to deal with severe severity. Is it possible that we will see a similar setup? I’ll bet so. At Augusta, players used those clubs to create height going to the greens, but in Philadelphia, they’ll need them for versatility.

If the PGA chooses not to increase the rough, then I can foresee some irons being built for the next run, especially with some of the shorter, well-bunkered shots on the front nine.

Either way, the pros and reps are leaving nothing to chance. These clubs are being built during this time, so whatever situation arises in Aronimink, a player should not check out a new club the week of a major championship.

Check this out

This section is dedicated to interesting photos we’ve taken recently on Tour, but haven’t had a reason to share yet. For this week, check out the rare Austin Eckroat Golf Pride Victory Cord Gloves. Eckroat is T2 heading to the weekend in Zurich with partner Davis Thompson.

Odds and ends

A few more gear changes and notes we’re following this week.

PXG launched its new 0317 Tour irons, which will apparently replace the current 0317 STs. They feature what appears to be a shallow hollow forged design, but have adjustable heel-toe weighting of bars 0311 Gen. 8. Chad Ramey and David Lipsky put them in the bag … Brooke Henderson switched to the new 2026 Spider Tour X with the burnished PVD finish on the Chevron while Will Gordon, Patton Kizzire and Keita Nakajima did so in Zurich … Ben Martin added a 2026 Spider Tour, while Kyle Watney brought out for the first time ever this week, Kyle Watney and Ni. field total is 32 … Blades Brown opted for a Callaway Qunatum Triple Diamond 7-wood instead of his 19˚ UT … Callaway won the driver count at Chevron with 32, five more than the most … Greyson Sigg and Erik van Rooyen are the latest to add Cyprus fashion, Alexit 4 MB, Alexit 4 … 3-wood and 7-wood, giving the Fitzpatrick brothers five fairways laid by Taylor Made between them… Michael Thorbjornsen switched to a P7MB TaylorMade set from 5-PW while his P7MC 4-iron remains… Marty Dou, Jacob Scov Olsen, Vince Whaley and Camilo Villegas all added Titleist GTS3s for the first time this week, making 56 players put one in play since launch All A, MacJ Me Tomu, and MacJ Me Tomu added at least one GTS fairway wood… Johnny Keefer and Tom Hoge both added a variant of Scotty Cameron’s Phantom 3 prototype with Keefer going with the 3 and Hoge choosing the 3.2

3 things you must read/watch

A selection of GOLF content from the past week that may interest you.

Can a ‘Private Golf Club’ Work? Inside the Underground – Johnny Wunder dives into the most exclusive golf ball in the game.

What I Learned Hitting Cobra’s Secret 3D Printed Touring Prototypes – Jake Morrow gets a chance to dive into Cobra’s 3DP Tour program by testing some of the prototypes made for special Tour players like Rickie Fowler and Lexi Thompson.

Cobra 3DP Tour Custom Handcuffs

The KING 3D Printed TOUR irons use 3D printing technology to unlock a new realm of performance. Their unique design features the most forgiving blade shape on the market, providing the forgiveness that aspiring players need, and the sleek look and soft feel that top players desire. 3D PRINTED STEEL CONSTRUCTION Each iron is fully 3D printed from 316 stainless steel. 3D printing offers significant advantages over traditional casting and forging methods, unlocking more design freedom and significant performance improvements. FALING PLAYERS BLADE SHAPE 3D printing has unlocked new design possibilities, enabling COBRA engineers to create a compact blade shape with the massive properties (high MOI, low CG) of a game-enhancing iron without sacrificing the smooth look and feel that top players demand. INTERNAL RAIL STRUCTURE COBRA took a muscular blade shape (similar in size and shape to the KING TOUR iron) and transformed the inside of the blade into a complex internal lattice structure to reduce club weight by 33%. This discretionary weight was repositioned to optimize feel, CG position and MOI.

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ALSO ALSO IN: PGA TOUR Superstore, Cobra

Matt Fitzpatrick’s victory proves that the blade knives are not gone yet – Matt Fitzpatrick won again after returning to his Bettinardi BB1 Flow prototype blade. The blade mover isn’t dead yet on the PGA Tour.

Bettinardi 2026 BB1 Savannah Blue PVD Putter

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The author welcomes your comments at Jack.Hirsh@golf.com.

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