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Michael Phelps warms up

Michael Phelps listens to music and stretches before the final in the 100-meter butterfly, a race he won by one-hundreth of a second. Phelps said one of his favorite artists to listen to before races at the 2008 Beijing Summer Olympics was rapper Lil' Wayne. "I was like, 'For real?' Mike... Chicago Tribune photo by Scott Strazzante