Usain Bolt took a last leisurely stroll around the track, placed his hands over his heart and then pointed toward the stands, as he said goodbye to his running career on the closing day of the world championships.

Jamaica's Usain Bolt kneels down during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Jamaica's Usain Bolt kneels down during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

The running had been over for nearly 30 minutes. As always, though, Bolt had a way of making everybody stay.

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Jamaica's Usain Bolt kneels down during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Usain Bolt took a last leisurely stroll around the track, placed his hands over his heart and then pointed toward the stands, as he said goodbye to his running career on the closing day of the world championships.

Jamaica's Usain Bolt bids farewell during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

The running had been over for nearly 30 minutes. As always, though, Bolt had a way of making everybody stay.

Jamaica's Usain Bolt is presented with a piece of the track by London Mayor Sadiq Khan, left. (AP Photo)

The world championships came to a melancholy close Sunday with an on-track tribute to the man who made the sport fun again. There were 11 gold medals at stake on a frenetic final day in London, and yet it was the sight of the hobbled champion walking slowly around the track — stopping to kneel at the starting lines for the 100- and 200-meter races he dominated for a decade — that made for the evening's best theater.

Jamaica's Usain Bolt makes his trademark gesture during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

"I think I almost cried," Bolt said. "I was just saying goodbye. That was it. Saying goodbye to my events. Saying goodbye to everything."

 (AP Photo)

There's not a household name in the bunch, and though all the performances were remarkable in their own way, this sport's lack of star power with Bolt out of the mix is hard to gloss over.

Jamaica's Usain Bolt kneels on the finish line during a farewell lap during the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

"What we're going to miss about Usain Bolt isn't the three back-to-back Olympic Games or the clutch of world records and medals," said Sebastian Coe, the leader of track's governing body, the IAAF. "It's because he has an opinion. He has a view. He fills a room. We have terrific talent that's identifying itself at these championships. But that's not the same as filling that void, and we have to work at that."

 (AP Photo)

Bolt's standing-room-only news conference was scheduled for 15 minutes but went about 35. He discussed his past, the future and the sport he leaves behind.

Jamaica's Usain Bolt applauds the spectators during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

He said over the long term, he could see himself coaching track and occasionally stepping into the TV booth for the sport's biggest events. His immediate plans? "I need to go out and have a drink," he said.

Jamaica's Usain Bolt is hugged by a child during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Asked one more time about doping, he said he thinks track is on an upward trajectory after two dispiriting years involving a doping scandal in Russia and problems across Africa and in his own country, Jamaica.

Jamaica's Usain Bolt greets a young boy during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

"I've proven to the world that you can do it, that you can be great without doping," he said. "Hopefully young athletes can look at me."

Jamaica's Usain Bolt makes his trademark gesture .(AP Photo)

"I've seen too many people retire and come back and make it worse and shame themselves," he said. "I personally feel I won't be one of those people."

Jamaica's Usain Bolt bids farewell during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Jamaica's Usain Bolt bids farewell during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

The world championships came to a melancholy close Sunday with an on-track tribute to the man who made the sport fun again. There were 11 gold medals at stake on a frenetic final day in London, and yet it was the sight of the hobbled champion walking slowly around the track — stopping to kneel at the starting lines for the 100- and 200-meter races he dominated for a decade — that made for the evening's best theater.

Jamaica's Usain Bolt is presented with a piece of the track by London Mayor Sadiq Khan, left. (AP Photo)

Jamaica's Usain Bolt is presented with a piece of the track by London Mayor Sadiq Khan, left. (AP Photo)

"I think I almost cried," Bolt said. "I was just saying goodbye. That was it. Saying goodbye to my events. Saying goodbye to everything."

"Someone tried to blame me, and said I started it," Bolt said of a 10-day run filled with upsets and surprises. "It was just one of those things. It was one of those championships where everything does not go your way."

Jamaica's Usain Bolt makes his trademark gesture during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Jamaica's Usain Bolt makes his trademark gesture during a lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

There's not a household name in the bunch, and though all the performances were remarkable in their own way, this sport's lack of star power with Bolt out of the mix is hard to gloss over.

 (AP Photo)

 (AP Photo)

"What we're going to miss about Usain Bolt isn't the three back-to-back Olympic Games or the clutch of world records and medals," said Sebastian Coe, the leader of track's governing body, the IAAF. "It's because he has an opinion. He has a view. He fills a room. We have terrific talent that's identifying itself at these championships. But that's not the same as filling that void, and we have to work at that."

Jamaica's Usain Bolt kneels on the finish line during a farewell lap during the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Jamaica's Usain Bolt kneels on the finish line during a farewell lap during the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Bolt's standing-room-only news conference was scheduled for 15 minutes but went about 35. He discussed his past, the future and the sport he leaves behind.

 (AP Photo)

 (AP Photo)

He said over the long term, he could see himself coaching track and occasionally stepping into the TV booth for the sport's biggest events. His immediate plans? "I need to go out and have a drink," he said.

Jamaica's Usain Bolt applauds the spectators during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Jamaica's Usain Bolt applauds the spectators during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Asked one more time about doping, he said he thinks track is on an upward trajectory after two dispiriting years involving a doping scandal in Russia and problems across Africa and in his own country, Jamaica.

Jamaica's Usain Bolt is hugged by a child during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Jamaica's Usain Bolt is hugged by a child during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

"I've proven to the world that you can do it, that you can be great without doping," he said. "Hopefully young athletes can look at me."

As far as a comeback is concerned, he insists it simply won't happen.

Jamaica's Usain Bolt greets a young boy during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

Jamaica's Usain Bolt greets a young boy during his lap of honor at the end of the World Athletics Championships in London Sunday, Aug. 13, 2017. (AP Photo)

"I've seen too many people retire and come back and make it worse and shame themselves," he said. "I personally feel I won't be one of those people."

Jamaica's Usain Bolt makes his trademark gesture .(AP Photo)

Jamaica's Usain Bolt makes his trademark gesture .(AP Photo)

But he has no regrets about running in this meet, or concerns that the results will tarnish his legacy. In a way, he said, the jaw-dropping losses were similar to the breathtaking wins: They showed that when he's on the track, anything really is possible.

"For me, it was brilliant," he said of the week that was. "I'm just really sad I have to walk away now."