Murray makes unexpected exit at US Open
Third-seeded Murray won his first Grand Slam title at Flushing Meadows last year and his second at Wimbledon this July. But he was overmatched from the beginning on a blustery day in Arthur Ashe Stadium.
After making 15 unforced errors against only eight winners in the first set, Murray cracked his racket on the court, then mangled it after walking over to the sideline.
This marks the first time since 2010 -- when he lost in the third round to Wawrinka -- that Murray failed to reach the semifinals at the U.S. Open.
Wawrinka reached his first Grand Slam semifinal.
Copyright 2013 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index