The U.S. Open summary for Joaquin Niemann looks like this: 71 holes of solid golf, one really bad one, a thrown club, a two-shot penalty and the willpower to not spend too much time wondering about what might have been.

"If my grandmother had tires, she'd be a car," Niemann said Sunday, not wanting to speculate much after wrapping up a tournament sullied by an opening-round 11 on the par-4 sixth hole that featured two tee shots out of bounds and two penalty strokes for hurling his club in frustration.

Niemann shot 4-under 66 in the final round to finish at 1-over 281.