Danna Vollmer
Missy Franklin
Alicia CouttsAustralia (AUS)
Lu YingChina (CHN)
Dana VollmerUnited States (USA)
Michael Phelps United States (USA)
Dana Vollmer set the world record in the women's 100 meter butterfly at the 2012 Olympic Games in London. Her time was 55.98 seconds.
Dana Vollmer
It's over Shelly-Ann Fraser-Pryce won Women's 100m on August 4 2012 and Usain Bolt Men's 100m on August 5 2012
Tie for silver medal and the bronze medal was not awarded Chad le Clos South Africa (RSA) Evgeny Korotyshkin Russia (RUS)
Michael Phelps
Brent HaydenCanada (CAN)
London