Sports are a test of mental and physical stamina. To be the best, you must overcome injuries, bad performance and losses.
Athletes have been remembered for competing in the worst physical condition. In many tennis matches there have players, in searing pain, continuing to fight for victory.
Then there are athletes on the other side of the scale—a chipped toenail causes a player to be out for two games, allergies force you to sit this one.
Here are the biggest babies in sports history.