Haley Cope beat out favorites BJ Bedford, Beth Botsford and Lea Maurer to qualify first for the finals of the 100 back.
Cope went out in 29.90 to finish in 1:02.02, winning the first semi-final heat. Qualifying second was Bedford in 1:02.23, then Courtney Shealy in 1:02.49. Amanda Adkins was fourth in 1:02.65, followed by Maurer, the 1992 bronze medalist in this event, in 1:02.71. 14-year-old Diana MacManus was sixth in 1:02.95. Botsford, the defending Olympic champion in this event, was seventh in 1:02.99, competing with a sprained ankle. Denali Knapp qualified eighth in 1:03.34.
Full results are available from US Swimming