World record holder Michael Phelps swims in the 100-meter butterfly during swimming finals of the Santa Clara International Grand Prix in Santa Clara, Calif., Friday, June 17, 2011. Phelps won in ... more 
World record holder Michael Phelps swims in the 100-meter butterfly during swimming finals of the Santa Clara International Grand Prix in Santa Clara, Calif., Friday, June 17, 2011. Phelps won in 52.41 seconds. (AP Photo/Paul Sakuma) less 
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Associated Press | Photo By Paul Sakuma
Fri, Jun 17, 2011 10:12 PM EDT