U.S. Open golfer who almost destroyed green in anger apologizes

Billy Horschel might have been the angriest golfer on the course on Sunday. He wasn't even playing that badly, but after a few missed he started trying to publicly shame the bumpy greens.

First, he did this:

Then, this:

After the round, Horschel said he had "lost a little respect for the USGA." The following day, Horschel took to his Twitter account to apologize. Not for his comments, which he stands behind, but for his behavior on the course.