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Sports Illustrated
Sports Illustrated
Sport
Josh Wilson

Jason Day Tried Wild Way to Manipulate His Putter at U.S. Open, and It Actually Worked

Jason Day gained 2.3 strokes on the field in his putting game Friday in the 2025 U.S. Open. | Bill Streicher-Imagn Images

Jason Day scored nine strokes better (three under par) in round two of the U.S. Open than his first round (six over par). His new putter had a lot to do with it.

Except... It's not new, of course. That would be against the rules now that the tournament at Oakmont Country Club has started. It's just... customized.

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