South Africa's Cameron van der Burgh took the Olympic 100m breaststroke gold in a world record time on Sunday.
Van der Burgh, 24, got a fast start and never looked like being caught, winning in 58.46, 0.05 seconds faster than Brenton Rickard's 2009 mark.
"I don't even know what to think. I don't know how to describe it," Van der Burgh said.
"I've been working towards this goal. It's amazing. I've been doing so much hard work over the last four years."
Christian Sprenger of Australia took the silver in 58.93, and America's Brendan Hansen the bronze in 59.49.
