Phelps breaks world record in 100 fly (AP)

[ASFN Admin]

Michael Phelps has broken the world record in the 100-meter butterfly at the U.S. national championships. The 14-time Olympic gold medalist swam the two-lap final in 50.22 seconds at the Indiana University Natatorium on Thursday night. He lowered Ian Crocker's mark of 50.40 set at the 2005 world championships in Montreal.

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