Aaron Peirsol has set a world record in the 100-meter backstroke, beating a strong field at the U.S. Olympic trials with a time of 52.89 seconds.
Peirsol broke the record of 52.98 he set at last year's world championships in Australia and locked up a spot on his third Olympic team. Now it's on to the 200 back, where he hopes to make up for an upset loss to world recordholder Ryan Lochte at the 2007 worlds.
Matt Grevers took the expected second Olympic berth in 53.19, while Lochte -- who dropped a spot in Tuesday night's 200 free final in hopes of improving his chance in the 100 back -- finished third at 53.37. Top qualifier Randall Bal was under record pace at the turn but faded to fourth at 53.45.