What's in the bag · PGA Tour
Jackson Koivun's WITB: a rookie's prototype-heavy Titleist bag
Koivun won the 3M Open months out of Auburn and was then a surprise Presidents Cup pick. His bag runs on prototypes — including a 620 MB iron block and a fairway a generation ahead of his driver.
By Jordan Hale · Equipment Writer
Jackson Koivun won the 3M Open on 26 July, months after turning professional out of Auburn, and Brandt Snedeker then made him the surprise of the Presidents Cup announcement. He tees it up at Medinah this week.
The bag is all Titleist and unusually prototype-heavy for a rookie: a 620 MB prototype iron block under a single T100 long iron, a GTS3 prototype fairway, and a Scotty Cameron Phantom tour prototype putter. The driver, oddly, is the older GT2.
- Tour
- PGA Tour
- Clubs
- Titleist
- Driver
- Titleist GT2 (8°)
- Ball
- Titleist Pro V1
Jackson Koivun's bag
Driver
8° · Fujikura Speeder 661 TR X
The GT generation — a generation behind the GTS fairway above it in the bag.
- Titleist3-wood
3-wood
Titleist GTS3 Prototype
15° · Graphite Design Tour AD DI 8 X
GTS3, not GT3 — and still a prototype at the 3M Open.
Utility iron
Titleist T250
3-iron · Graphite Design Tour AD DI HY 95 X
Long iron
4-iron · Project X 120g 6.5
A single T100 sits on top of the prototype block below.
- TitleistIrons
Irons
Titleist 620 MB Prototype
5–9 · Project X 120g 6.5
Wedges
46-10F, 50-08F, 54-08M, 60-04T · Project X 6.5 / 6.0 / IO 6.0
- ScottyPutter
Putter
Scotty Cameron Phantom 9.5R Tour Prototype
SuperStroke Zenergy Pistol GT grip
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Prices shown in your currency. We only link gear we stock where it matches what Jackson actually plays; other clubs are listed for reference. Tour players use custom specs, so lofts and shafts differ from the retail versions.
Keep going
How the Titleist GT2 stacks up against the obvious alternative:
One other player in our bags plays the Titleist GT2:
The story of the bag
The generation split is the quirk worth noticing: the fairway is a GTS3, from the newer family, while the driver is still a GT2. Most players move the other way round, replacing the driver first.
No source states that he has signed a Titleist staff deal. The all-Titleist bag and the prototype access make one look likely, but it is inferred rather than reported, so this page does not claim it.
Frequently asked
- What driver does Jackson Koivun use?
- A Titleist GT2 at 8 degrees with a Fujikura Speeder 661 TR X shaft — the GT generation, a step behind the GTS3 fairway he carries above it.
- What irons does Jackson Koivun play?
- A blended set: a single Titleist T100 4-iron on top of a 620 MB prototype block from 5-iron to 9-iron, with a T250 3-iron as the utility above them.
- How did Jackson Koivun make the Presidents Cup team?
- He was a captain's pick by Brandt Snedeker, widely reported as the surprise of the announcement. He turned professional out of Auburn and won the 3M Open in July 2026.
- What putter does Jackson Koivun use?
- A Scotty Cameron Phantom 9.5R Tour Prototype with a SuperStroke Zenergy Pistol GT grip — a tour-only head rather than a retail model.
Verified
This bag reflects Jackson Koivun's setup as of 7 Sept 2026. Tour players tweak gear week to week, so we date every bag and cite our sources. Spot something out of date? Tell us.
We've reviewed what's in this bag
A tour bag is built to tour specs and tour swing speeds — useful to study, not to copy. Here's our own verdict on the clubs above, and who they suit:
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