Jon Rahm might have had a song playing in his head Sunday after he watched Dustin Johnson force a playoff with a 43-foot birdie putt on No. 18.
Anything you can do I can do better.
Rahm, who opened the BMW Championship at the Olympia Fields North Course with a five-over 75 on Thursday and 71 on Friday, was a different player over the weekend, concluding his tournament with a 64 on Sunday to finish four under overall.
He went into the clubhouse with a one-stroke lead, but Johnson almost spoiled his day.