For complete coverage of the London Olympics, head to NBCOlympics.com.
LONDONMatt Grevers of the United States set an Olympic record to win the mens 100-meter backstroke at the London Olympics on Monday.
Grevers finished in 52.16 seconds, 0.38 ahead of the previous mark set by fellow American Aaron Peirsol at the 2008 Beijing Games.
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Nick Thoman, another American, was second in 52.92, and Ryosuke Irie of Japan was third in 52.97.
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