Matt Grevers competes to set Olympic record in 100 back

July 30, 2012: United States' Matthew Grevers celebrates his gold medal win in the men's 100-meter backstroke swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London. (AP)

Matt Grevers of the United States set an Olympic record to win the men's 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.

Nick Thoman, another American, was second in 52.92, and Ryosuke Irie of Japan was third in 52.97.