J.J. Spaun celebrates with his caddie, Mark Carens, after making a birdie putt on the 18th hole during the final round of the U.S. Open golf tournament at Oakmont Country Club Sunday, June 15, 2025, in Oakmont, Pa. Credit: AP

When sheets of rain descended upon Oakmont on Sunday afternoon and an army of groundskeepers started taking squeegees and towels to the fairways, a tumultuous finish and bizarre turn became inevitable at this U.