Usain Bolt Injures Hamstring, Rio Olympics Participation in Doubt

Usain Bolt's Olympic quest is in doubt, after the sprint superstar left his country's national championships with a hamstring injury shortly before he was going to run the 100-metre final.

And that was just one part of a bizarre night at National Stadium.

Bolt's longtime rival Yohan Blake won the 100 title and formally qualified for the Rio de Janeiro Olympics - but only after a false-start disqualification call against him was overturned after review.

But even after Blake regrouped and prevailed, all the buzz was about Bolt and his status going forward especially since the national meet serves as the Jamaican Olympic trials.

He's not out of the Rio Games, but his status hinges now on how he does at a meet in London in three weeks. Bolt said he was diagnosed with a Grade 1 hamstring tear - the most mild sort - and that the discomfort began presenting itself in his quarterfinal race on Thursday night.

"I have submitted a medical exemption to be excused from the 100m final and the remainder of the National Championships," Bolt said in a statement released through Jamaican officials.

pic.twitter.com/28i4fP9LSW

- Usain St. Leo Bolt (@usainbolt) July 2, 2016

"I will seek treatment immediately and hope to show fitness at the London Anniversary Games on July 22 to earn selection for the Olympic Games in Rio."

Blake, who finished second to Bolt at the London Games in the 100, said he was confident that the world-record-holder will be in Rio.

"No doubt, no doubt, no doubt," Blake said. "It's just a caution measure. He's good. Just being cautious."

Starting the recovery process right away. pic.twitter.com/J0HuvxOfiJ

- Usain St. Leo Bolt (@usainbolt) July 2, 2016