GOLF.com: How J.J. Spaun Built a U.S. Open-Winning Setup Around Ball and Iron Harmony

Control Over Distance: Spaun's Core Philosophy

J.J. Spaun, the 2025 U.S. Open Champion, has deliberately chosen to operate in the mid-170s mph ball speed range with his Driver — not because he can't swing faster, but because chasing extra yards cost him the shot dispersion he depends on. His equipment decisions flow from that foundational commitment to control.

Ball First, Everything Else Second

Spaun's equipment fitting process is unusual: it starts with the golf ball, not the irons or Driver. He views the ball as the baseline of his entire technical system, since it's the only piece of equipment used on every shot.

After finding the standard Z-STAR too soft and the Z-STAR XV too low-spinning, the Srixon Z-STAR Diamond delivered his ideal window: 6,800–7,000 RPM with a 7-iron. His testing protocol begins with chipping and putting to evaluate acoustics and feel — if a ball sounds or feels too firm, it's eliminated immediately.

V-Sole Engineering for a Trap Fader

Spaun is classified as a "trap fader" — he aggressively shifts into the ball with a steep angle of attack, compressing it hard and producing a tight, predictable left-to-right shape. That delivery style demands a specific sole geometry. The Srixon ZXi's V-Shaped Sole, with higher bounce on the leading edge and lower bounce on the trailing edge, prevents the club from digging on steep strikes, preserving his natural launch and spin conditions.

His combo iron setup reflects the same precision: ZXi5 hollow-body heads in the 4- and 5-irons for high launch and hold on long approaches, transitioning to ZXi7 cavity-backs (True Temper Dynamic Gold X100 shafts) from 6-iron through PW. Every club is gapped at a consistent 11–13 yards — the predictability that made U.S. Open rough survivable.

One All-Terrain Wedge

Rather than carrying multiple lob wedges for different course conditions, Spaun uses a single custom Cleveland RTX ZipCore 60-degree with a wide sole and aggressive heel/toe relief — functional in both soft and firm turf without changing the tool.

Strokeslab Editorial Comment

From a Strokes Gained perspective, Spaun's setup philosophy is a masterclass in SG: Approach optimization — consistent yardage gaps and predictable spin profiles matter far more than raw distance. His U.S. Open win is evidence that controllable ball-striking, not maximum carry, is the winning formula on demanding setups.