Career
She holds the Olympic record of 52.64, set at the 2008 Beijing Olympics, and her time of 52.42 seconds at the 2009 World Championships in Berlin is the second fastest time in history. Walker is a past student of the Saint Jago High School. She leapt on the back of the mascot Berlino the Bear to do a victory lap but Berlino crashed into a cart of hurdles and dropped her.
Personal bests 60 metres hurdles – 8.05 s (2006, indoor).