Welcome to Fully Equipped’s weekly Tour equipment report. Every Friday of PGA Tour weeks (plus other times, if news warrants), GOLF equipment editor Jack Hirsh runs you through some of the biggest news surrounding golf clubs on Tour, including changes, tweaks and launches.
In what’s a typically quiet week for gear changes this week at the unique team format Zurich Classic, one of Titleist’s new drivers is starting to raise eyebrows — and it’s not the model you’d think.
With a tough spot in the schedule and a different format, the Zurich Classic usually offers a window into the world of gear for some of the PGA Tour’s grinders as they try to take advantage of a rare start. You can check out some of the cool things we spotted last year here.
This year is more of the same, with only a few players making major gear switches. However, there’s one trend involving Titleist’s GTS drivers, which have now been on the Tour for five weeks. It appears the GTS4 will be a bit more than a niche driver in the GTS lineup.
This week, three players put the new “4” model into play, which already outpaces GT4 usage for the entire season. Two different players used the GT4 in one event each this past season, Vince Whaley at the WM Phoenix Open and Thomas Rosenmueller at the Farmers Insurance Open.
For the last several generations, the “4” model has been the most compact driver in the Titleist family, usually clocking in under the maximum 460 cc USGA legal limit at 430 cc or 440 cc. It served a unique purpose as a low-spin option for a player with a negative-angle-of-attack delivery with a driver and presumably very high speed.
In recent years, pros have moved away from more compact low-spin 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 simply not many players have needed, similar to the company’s CPO golf ball offerings.
But since the launch five weeks ago, already four players have put the new GTS4 into play, double the usage of the GT3. Zac Blair, Davis Riley and Frankie Capan III all added the driver this week, joining Patrick Cantlay, who debuted it last week at Harbour Town.
We’re still don’t have official details on the new driver from Titleist, but thanks to an interview Riley did with GolfWRX at the Zurich Classic, we know the GTS4 “isn’t quite as small” as the GT4. Whether that means it’s up to 460 cc 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 capture a lot more usage than it has previously. We’ll await the official details for more!
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 in the lead-up to the year’s second major, which is why many bigger names took this week off at the Zurich.
After we saw loads of clubs built specifically for Augusta National in the weeks leading up to the Masters, what might players go for at Aronimink for the PGA Championship?
That work is taking place right now, with many pros taking the week off from New Orleans and several taking next week’s Cadillac Championship in Miami off as well.
As a classic Donald Ross design, Aronimink will challenge players off the tee with numerous well-placed bunkers and likely heavy rough.
Last year’s PGA Championship at Quail Hollow saw a craze of 7-woods and 9-woods to deal with the heavy rough. Is it possible we see a similar setup? I would bet so. At Augusta, players used those clubs to create height going into the greens, but in Philadelphia, they’ll need them for versatility.
If the PGA chooses not to grow the rough up, then I could foresee some driving irons being built for the next major, especially with some of the shorter and well-bunkered tee shots on the front nine.
Either way, pros and reps aren’t leaving anything to chance. Those clubs are getting built during this time, so whatever situation arises at Aronimink, a player doesn’t have to vet a new club the week of a major championship.
Check this out
This section is dedicated to cool photos we’ve snapped recently on Tour, but haven’t had a reason to share yet. For this week, check out Austin Eckroat’s rare Golf Pride Victory Cord grips. Eckroat is T2 heading into the weekend at the Zurich with partner Davis Thompson.
Odds and Ends
Some other gear changes and notes we’re tracking this week.
PXG launched its new 0317 Tour irons, which will presumably replace the current 0317 STs. They feature what looks like a forged shallow-cavity design, but have the adjustable heel-toe-weighting of the 0311 Gen. 8 irons. Chad Ramey and David Lipsky put them in the bag … Brooke Henderson switched to the new 2026 Spider Tour X with the torched PVD finish at the Chevron while Will Gordon, Patton Kizzire and Keita Nakajima did so at Zurich … Ben Martin added a 2026 Spider Tour while Kyle Stanley and Nick Watney switched to Spiders this week, all for the first time, bringing the field total to 32 … Blades Brown opted for a Callaway Qunatum Triple Diamond 7-wood in place of his 19˚ UT … Callaway won the driver count at the Chevron with 32, five more than the next most … Greyson Sigg and Erik van Rooyen are the latest to add Callaway’s trendy Apex MB ’26 prototype … Alex Fitzpatrick has a Qi4D 3-wood and 7-wood, giving the Fitzpatrick brothers five TaylorMade fairways between them … Michael Thorbjornsen switched to a set of TaylorMade P7MBs from 5-PW while his P7MC 4-iron remains … Marty Dou, Jacob Scov Olsen, Vince Whaley and Camilo Villegas all added the Titleist GTS3 for the first time this week, making for 56 players to put one in play since it launched … Dou, A.J. Ewart, Doug Ghim, Tom Kim and Mac Meissner all added at least one GTS fairway wood … Johnny Keefer and Tom Hoge both added a variation of Scotty Cameron’s Phantom 3 prototype with Keefer going with the 3 and Hoge chosing the 3.2
3 things you should read/watch
A selection of GOLF content from the past week that may interest you.
Can a golf ball ‘private 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 Tour prototypes – Jake Morrow gets a chance to dive into Cobra’s 3DP Tour program by testing some of the prototypes made for specific Tour players like Rickie Fowler and Lexi Thompson.
View Product
ALSO AVAILABLE AT: PGA TOUR Superstore, Cobra
Matt Fitzpatrick’s win proves blade putters aren’t extinct just yet – Matt Fitzpatrick won again after switching back to his Bettinardi BB1 Flow prototype blade. The blade putter is not dead yet on the PGA Tour.
View Product
The author welcomes your comments at Jack.Hirsh@golf.com.
Want to overhaul your bag in 2026? Find a club-fitting location near you at True Spec Golf.
