IRVING, Texas — Keegan Bradley broke the TPC Four Seasons course record with a 10-under 60 in the opening round of the Byron Nelson Championship.

Bradley had consecutive bogeys midway through his round Thursday. After his second bogey, at No. 1 to start his second nine, he was 7 under his last eight holes.

The 60 matched the lowest round ever at the Nelson.

Arron Oberholser shot 60 in the second round of the 2006 tournament, but that was on the Cottonwood Valley course across the street that used to be used the first two rounds. Sam Snead shot 60 in the 1957 tournament at Glen Lakes Country Club.

Justin Leonard, Charlie Rymer, Cameron Beckman and Billy Mayfair shot 61s at TPC Four Seasons.