Martin Kaymer netted a pair of back-nine birdies on Sunday to put things out of reach for the rest of the field at the 114th U.S. Open Championship. Kaymer's lead dipped to four on the front nine, but birdies at 13 and 14 pushed him eight clear of the field. The German poured in a par putt on the 18th to wrap up a round of 1-under 69. Kaymer ended the championship at 9-under-par 271. Kaymer, who also won the 2010 PGA Championship, became the first player to ever win the Players Championship and the U.S. Open in the same year. Erik Compton posted a 2-over 72 to end at 1-under-par 279. The two-time heart transplant recipient posted his best finish on tour in just his second major championship start. Rickie Fowler also closed with a 72 to share second place with Compton.