Ready For Rio?
Usain Bolt became the first man to defend titles in the 100 and 200 at the London Olympics. Now, he wants to go for the three-peat, with no new events, in 2016. "That's the focus," he said Monday. StoryCameron Spencer/Getty Images
Here is the complete U.S. roster for the IAAF World Championships, which will be held Aug. 10-18 in Moscow: