 The same day, Melaine Walker won the women's 400 m hurdles event in a new Olympic Record time of 52.64 seconds, breaking the old mark set in 1996 by Deon Hemmings.On 21 August, Jamaica completed a clean-sweep of all the individual sprints (100 and 200 m), and confirmed the nation's dominance when Veronica Campbell-Brown successfully defended her Olympic 200 m title winning the event ahead of Allyson Felix of the United States, and Kerron Stewart who took bronze.On 22 August, the Jamaican women's and men's 4 x 100 m relay teams took to the track.