Usain Bolt loses gold medal for teammate's banned substance use

Eight-time gold medalist Usain Bolt is now seven-time gold medalist Usain Bolt.

The Jamaican sprinter will have to hand back a gold medal he earned in the 4x100-meter relay at the 2008 Olympics. Nesta Carter, Bolt's teammate in the 4x100-relay, tested positive for methylhexaneamin, meaning the International Olympic Committee (IOC) will revoke the gold medals of all four members of Jamaica's 4x100-meter relay team.

"The Jamaican team is disqualified from the men’s 4x100m relay event," the IOC's announcement reads. "The corresponding medals, medallist pins and diplomas are withdrawn and shall be returned."

Jamaica's disqualification comes a couple months after the IOC banned 16 athletes for doping in Beijing.

The Jamaican team, which also included Michael Frater and Asafa Powell, won gold by setting a world record in the event. Bolt also set two world records of his own that summer, winning gold in the 100- and 200-meter events.

For Bolt, the revoked medal puts an unfortunate asterisk on his legacy.

He announced the 2016 Olympics in Rio would be his last, so he's out of redemption opportunities. But for a sprinter dubbed the fastest man alive, getting back in the game and winning another gold medal wouldn't be too hard.