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Justin Gatlin's personal best time in the 100 meters is 9.74 seconds. This is the second-fastest time in history, behind Usain Bolt's world record of 9.58 seconds. Gatlin set his personal best time at the 2012 Olympic Games in London. He finished second in the final, behind Bolt. Gatlin has also won the 100 meters at the World Championships three times (2005, 2011, and 2015).