The 6-foot-6 "math and science geek" spent five years caddying at the Oakmont Country Club, which is hosting the 2025 U.S. Open Championship.

The 6-foot-6 "math and science geek" spent five years caddying at the Oakmont Country Club, which is hosting the 2025 U.S. Open Championship.

"I think today was one of my best maybe putting days I’ve had maybe all year,” Spaun said.