BEST QUALITY.brUsain Bolt beats Justin Gatlin in 9.79 at the 2015 World Championships Beijing.brbrSubscribe 4 more Usain Bolt won the 100 m. Usain Bolt Wins 9.79 100m Final IAAF World Championship Beijing 2015 He and Bolt were matching each other .brUsain Bolt beats Justin Gatlin and wins 100m final 9.79 s| IAAF World Athletics Championships BEIJING 2015 | Gold medal Usain Bolt 9.79 Defeats Justin Gatlin .