An eight-time Olympic medallist, she rose to prominence at the 2008 Beijing Olympics, becoming the first Caribbean woman to win gold in the 100 m. At the 2012 London Olympics, she became one of only three women in history to defend an Olympic 100 m title. After injury affected her season, she won bronze at the 2016 Rio Olympics. At the 2020 Tokyo Olympics, she captured silver, becoming the first woman to medal in the 100 m at four consecutive Olympic Games.