Hungary's Katinka Hosszu won the women's 400 IM by more than 3.5 seconds over Caitlin Leverenz with a time of 4:32.83.
Nathan Adrian, who beat Phelps in the 100 free on Thursday after his trunks ripped, won again Friday by edging out George Bovell by 0.01 seconds in the men's 50 free. Madison Kennedy won the women's 50 free in 24.99.
Meanwhile, Phelps finish put the 400 IM back on the discussion list for this summer.
"Who knows?" he said. "I'm going to have to be in a little better shape to add that into the program because I have to do that well and then climb back in and do all the other events well, too."
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