Michael Phelps has been named the winner of the 400 meters freestyle final in the 100 meter butterfly.
He also beat his world record time by a margin of 1:34.28, while the 800 meter butterfly final was won by Ryan Lochte with a time of 1,865.59.
The men’s 100 meter freestyle and 800 meters freestylers also went to the final, with Phelps finishing third.
He beat Lochte’s time by 1:42.54.
Swimmers, track and field athletes and track and cross country teams will compete in the four-event Olympic trials later this week.
The first Olympic trials are scheduled for August 1.