She was an All American at the NCAA Women’s Outdoor Track and Field Championship in 2004. Harper won a Gold Medal at the 2008 Beijing Olympic games representing the United States in 100 meter hurdles. She won a Silver Medal in the same event at the 2012 London Olympic Games and won a bronze at the 2011 Daegu World Championships. She became the first American who has ever won a Gold at an Olympics and then won any medal at the following Olympics. Harper is trained by husband of Jackie Joyner-Kersee, Bob Kersee.