Michael Phelps fell again at the Longhorn Elite Invitational.
The 18-time Olympic gold medalist finished fourth in the 200-meter freestyle Saturday in Austin, Texas. University of Texas sophomore Townley Haas won in 1 minute, 47.86 seconds, while Phelps, the American record holder, finished in 1:48.73.
On Friday night, Phelps won the 100 freestyle, then lost to Singapore's Joseph Schooling -- another Texas swimmer -- in the 100 butterfly.
Weekend meets in Austin, Indianapolis and Santa Clara, California, are the final tuneup before the U.S. Olympic Trials starting June 26 in Omaha, Nebraska.
Allison Schmitt beat Missy Franklin for the second straight night in Austin in a showdown of swimmers who won a combined seven gold medals in 2012. Schmitt won the 200 freestyle in 1:56.87; Franklin was second in 1:57.78.
Franklin rebounded to win the 200 backstroke in 2:09.45.
At Santa Clara, Connor Dwyer turned in the world's eighth-fastest time this year, 3:46.09, in the 400 freestyle. Josh Prenot swept the breaststroke events and set a new meet record in the 200, at 2:09.44.
Natalie Coughlin finished fourth in the 50 freestyle, won by Emma McKeon in 24.85. Coughlin's time was 25.19.
In an Indianapolis Arena Pro Swim Series event, David Plummer turned in the fastest time of the year in the 100 backstroke, a personal-best 52.40.
"I'm really happy with it," Plummer said. "We've been working a ton on holding tempo, trying to get that speed up to where it needs to be and just holding it right at the quickest tempo I can hold. I feel like it's really starting to come around, especially that second 50. I feel really good about that; I'm excited about where I am."
Olivia Smoliga's personal best 59.41 in the women's 100 backstroke is No. 6 in the world in 2016 and tops among Americans.
Kelsi Worrell, Melanie Margalis and Nic Fink all have won multiple events.