Usain Bolt further solidified his status as the greatest sprinter in history as he regained his 100m world title to win a fourth individual World Championships gold in Moscow.
The Jamaican overtook Justin Gatlin in the final stages of the race to record a season's best time of 9.77 seconds, beating the American's effort of 9.85 while Bolt's compatriot Nesta Carter secured a bronze medal (9.95) as Britain's James Dasaolu finished in eighth place.
On a stormy night in the Russian capital, the 26-year-old equalled the eight fastest time of his career to stave off the challenge of Gatlin, who beat the world champion in Rome earlier this summer, to dominate the event despite not reaching his own high standards.
"I am happy but I wanted to do better," Bolt told BBC Sport. "My legs were sore after the semi-finals, I don't know why, but the world record wasn't on so I came out just to win.
"Back in Jamaica they do not expect less than that from me. They always expect to me to dominate."
Bolt endured a slow start to the proceedings, emerging from the blocks the fifth fastest as Gatlin took an early lead. The Jamaican did not pass his American counterpart until the last 40m as the second place finisher wavered at the final stages as Bolt closed in.
"I'm very happy with me race. The last 30m I got long. In Rome, I was able to do my race, which I didn't do tonight," Gatlin said.
"He (Bolt) has been working on his start. In Rome, he had the best reaction out of everybody and he is 6ft 5in. I had to make sure I was beating him to 50m.
"I got to 50m or 60m but then they just started to run away from me. I think the semi-final took it out of me, but I made it through three rounds and I'm happy that I'm injury free and I can continue with the rest of the season."