London Olympics Swimming Men

Cameron van der Burgh celebrates his world record. (Matt Slocum/Associated Press)

Cameron van der Burgh celebrates his world record. (Matt Slocum/Associated Press)

South Africa’s Cameron van der Burgh at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Sunday, July 29, 2012. (AP Photo/Matt Slocum)