Usain Bolt Disappointed After World Championship 100m Defeat But Says He Has No Regrets.

Bolt still had time for his lighting trademark despite the defeat

Usain Bolt had no regrets after his farewell to the 100m ended in a World Championship final defeat to old rival Justin Gatlin. 

The Jamaican great had to settle for third inside London's Olympic stadium, where a chorus of boos greeted Gatlin's win ahead of American counterpart Christian Coleman because of his previous doping violations.

Bolt admitted he was disappointed not to say farewell with victory - he still has the 4x100m relay to race before his retirement - but said he could have done no more.

"No regrets. I came out and did my best, I was always to end no matter what happened - win, lose or draw I was always going to walk away," Bolt said.

"It doesn't change anything in my career, I have done everything I can do for the sport and for myself. It's time to go. I lost the race to a great competitor, I came third to a young kid coming up - he has a great talent and a great future ahead of him.''

United States' Justin Gatlin bows to Usain Bolt after the Jamaican's final 100m run

Bolt still went on a lengthy lap of honour after his defeat, much to the delight of the packed crowd, but some of the gloss of that celebration was taken away by the reaction to Gatlin's victory.

Gatlin (L) came with a strong late burst to claim his second world 100m title, 12 years after his win in Helsinki