From Huffington Post:
US Swimmer and Beijing relay gold medalist Ricky Berens tore the back of his swimsuit in a qualifying heat of the 4x100m relay freestyle on Sunday during the World Swimming Championships in Rome. Shortly before stepping up to the starting block, the University of Texas senior leaned down to stretch and his suit tore.
"I kind of freaked out for just a second," Berens said. "I felt like [the hole] was almost down to my knees. I felt like I was putting on a pretty good show."
He did. And the US qualified for finals and won.