Dana Vollmer

Great Britain's Siobhan Marie O'Connor smiles after she won the semi-final 1 of the women's 200m individual medley swimming event at the 2015 FINA World Championships in Kazan on August 2, 2015
Result: Dana Vollmer sets world record in 100m butterfly final
Dana Vollmer wins the 100m butterfly final to win gold in a world record time.
Jul 29, 19:51
Great Britain's Siobhan Marie O'Connor smiles after she won the semi-final 1 of the women's 200m individual medley swimming event at the 2015 FINA World Championships in Kazan on August 2, 2015
Ellen Gandy through to 100m butterfly final
Ellen Gandy is through to the 100m butterfly final in a heat dominated by Dana Vollmer and Alicia Coutts.
Jul 28, 20:15