The stage is set for an anticipated showdown in the 100-meter butterfly at the Rio Olympics.
Michael Phelps, the three-time defending gold medalist in the event, swam a 51.00 to win the 100 fly Saturday at the U.S. Olympic team trials in Omaha, Neb., qualifying for his third individual event in next month's Games. Tom Shields finished second (51.20), just 0.04 better than top seed Seth Stubblefield, to clinch a spot beside Phelps in what will be Shields' first Olympics.
Phelps, swimming on American soil for the final time in his storied 16-year career, will square off against international rivals Laszlo Cseh of Hungary and Chad le Clos of South Africa in Rio.