Michael Phelps Sets New World Record  Michael Phelps |
Michael Phelps, the 14-time Olympic gold medal winner, has set a new world record in the men's 100-metre butterfly at the US swimming championships.
His time of 50.22 seconds on Thursday in Indianapolis, Indiana set a new mark in the event.
The Olympic star, who holds eight world records in swimming, declared himself Thursday "pretty happy with my swim
