Two-time 100-meter Olympic gold medalist Usain Bolt withdrew from the Jamaican Olympic Trials on Friday after suffering a Grade 1 hamstring tear.
Bolt won his 100-meter semifinal heat with a time of 10.04 seconds. He complained of a tight hamstring after his preliminary race on Thursday, and the pain resurfaced after his semifinal run.
Bolt tweeted Friday night that he has a grade 1 tear in his left hamstring.
He said he first felt discomfort in his leg after he ran in the first round of qualifying for the 100 meters Thursday. After he won his semifinal heat Friday evening he felt pain again and saw a doctor, who diagnosed the tear.
"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," Bolt, the world record holder at 100 and 200 meters. said.
Bolt said he submitted a medical exemption ahead of Friday night's 100 meter final, asking to miss the final and the rest of the events at Jamaica's Olympic trials.