Omaha, NE (My Sportsbook) - Natalie Coughlin quickly regained her 100-meter backstroke world record after Hayley McGregory had claimed the mark earlier during heats at the U.S. Olympic swimming trials on Monday.

McGregory reached the wall in 59.15 seconds during the morning preliminaries to break Coughlin's world record of 59.21. But McGregory didn't hold the mark long. The 25-year-old Coughlin completed her heat at 59.03 to take back the record less than two minutes later.