- SHANGHAI: Dana Vollmer of the United States had the fastest qualifying time in the 100-meter butterfly, the first swimming event of the world championships.
Vollmer was timed in 56.97 seconds on Sunday, ahead of Alicia Coutts of Australia, who was second-fastest in 57.49.
American Christine Magnuson, defending champion Sarah Sjoestroem of Sweden and Jess Schipper of Australia were among the top 16 qualifiers for the semifinals.
It is the first world swim meet since the high-tech suits that led to 43 world records being set two years ago in Rome were banned.