FILE - In this May 25, 2012 file photo, Serbia's Milorad Cavic swims his 100 meter Butterly heat at the European Swimming Championships in Debrecen, Hungary. It's not just about taking one last crack at beating Michael Phelps. For Milorad Cavic, the London Olympics represent a chance to prove wrong all his doubters. All the doctors who told him that back surgery would end his career.The friends and family members, too, who begged him to reconsider before having a herniated disk repaired in July, 2010. I'm making history and defying the odds, and that means a lot to me," Cavic said in a recent interview with The Associated Press. "Every doctor told me that I would never be at this level again, and here I am, I'm doing it, and I think that's testament that a little bit of human will is greater sometimes even than science. (AP Photo/ Michael Sohn)