OMAHA, Neb. (AP) — Natalie Coughlin stood on deck watching Hayley McGregory erase her world record in the 100-meter backstroke. Coughlin decided she wanted it back. Two minutes later, it was hers again.

Coughlin reclaimed the mark by winning her preliminary heat in 59.03 seconds Monday at the U.S. Olympic swimming trials. One heat earlier, McGregory finished first in 59.15, bettering Coughlin's mark of 59.21 set Feb. 17.

"I don't think you ever expect to go a world record, but it happened," McGregory said. "Really cool that it's possible to happen in the prelims."

She had barely climbed out of the pool before Coughlin got in and electrified the crowd again.