Lindsay Benko, 23 and representing Trojan, won the 200 free with a 2:00.45, followed by Rada Owen, 21 and swimming for Auburn, in 2:00.54.
Samantha Arsenault, the top qualifier, blasted out under world record pace the first 50 (26.97), a full .68 ahead of the field. She was still only .01 off record pace at the 100, but by the 150 Benko had pulled even and Arsenault faded to third at the end (2:00.79).
Fourth was Julia Stowers, swimming from lane 1, in 2:01.16. Fifth was Diana Munz, the 400 free champion, in 2:01.38. Sixth went to Kimberly Black in 2:01.49. The top six in this event qualify for the 800 free relay at the Olympics.
Sarah Tolar was seventh in 2:01.50, and Ellen Stonebraker was eighth in 2:01.61.
For live results feeds check the OMEGA TIMING site.
Full results and schedule of events are available from US Swimming