On the first day of finals at the Missouri Grand Prix, Kirsty Coventry (ZIM) broke Krisztina Egerszegi's (HUN) 200 back world record from 1991 of 2:06.62. Coventry was wearing the new Speedo suit and posted a 2:06.39.

Minutes later, Katie Hoff (USA) went after Laure Manadou's (FRA) 400 free record, also in the new suit. She just missed it 4:02.20 to Manadou's 4:02.12, but broke the oldest American record on the books, Janet Evans' (USA) 1988 record. Hoff also won the 100 free in a best time of 54.28.