At the 2017 World Championships in Athletics in London, Blake finished in fourth place yet again in the 100 m final. This time, he clocked 9.99 seconds, just 0.04 behind Usain Bolt, who failed to win his last individual race and instead settled for bronze. Blake was one of the only four men who went under ten seconds during the race, the others being Bolt, silver medalist Christian Coleman, and gold medalist Justin Gatlin. Just as he did in Rio the previous year, Blake failed to progress into the 200 m final, though he was ranked closer this time with 11th overall and a slower 20.52 s to come third in his heat. After this, Blake looked forward to the Men's 4 × 100 metres relay, his last chance at a medal at the championships, and Usain Bolt's final race. During the race, Bolt pulled up 50 metres from the finish line in what was later confirmed to be another hamstring injury. Blake helped the injured Bolt, who refused a wheelchair, to his feet. Blake left the championships with no medals.