Usain Bolt wins the 100 meters at the world championships in a time of 9.77 seconds . The Jamaican sprinter is expected to win gold for his second consecutive title and third overall after winning three golds earlier this year in Beijing, London and Rio de Janeiro. Bolt now owns six world championship gold medals to go along with six gold medals at the Olympics . American Justin Gatlin took the silver and Jamaica 's Nesta Carter claimed bronze .
Usain Bolt wins the 100 meters at the world championships in a time of 9.77 seconds . The Jamaican sprinter is expected to win gold for his second consecutive title and third overall after winning three golds earlier this year in Beijing, London and Rio de Janeiro. American Justin Gatlin took the silver and Jamaica 's Nesta Carter claimed bronze .