Natalie Coughlin has set her second world record in two days, breaking her own mark in the 100-meter backstroke at the U.S. Olympic swimming trials.
Coughlin became the first woman to break 59 seconds in the backstroke, lunging to the wall in 58.97. A day earlier, she set a world record in the preliminaries of 59.03, just 2 minutes after Hayley McGregory eclipsed Coughlin's previous mark.
Margaret Hoelzer took second _ and a probable berth on the U.S. Olympic team _ in 59.21. McGregory, who was a recordholder just 24 hours earlier, finished third in 59.42 and failed to make the American team.
