Saturday marks the end of the Usain Bolt's career.
Unfortunately, Bolt's final race was cut short when he pulled up lame on the final leg.
Great Britain took gold, the United States grabbed silver, but like who cares.
He lay there motionless for some time as medical officials rushed to his aid, bringing a wheelchair onto the track. He hauls himself up and limps across the line before applauding the crowd and crouching back down in some pain.
Usain Bolt's glittering career swansong came crashing to an end when he pulled up on the anchor leg of the world 4x100m relay won by Britain on Saturday.
It's a disappointing ending expected to be the final race for the greatest sprinter ever, which - nooooooooooo don't leave us Usain.
Teammate Omar McLeod walked past, tears in his eyes as the magnitude of the situation dawned on him.
There are also gold medals to be won in the women's high jump and the men's javelin.
"He kept apologising to us but we told him there was no need to apologise", Forte said.
What TV channel will air Usain Bolt's last race live?
It was success too for the men's and women's 4x400m teams as both progressed to Sunday's finals.
"It's been a long journey back from injury, but to get this moment and go and celebrate in front of my family is unreal", said Pearson, 30. It's not the sort of thing that any of us from Jamaica are accustomed to.
"I think it was the elements (that caused the injury)".
"It was really cold".
Instead Bolt ended up flat on the track, pulling up with that appeared to be a hamstring injury about halfway down the anchor leg. "He said he had a little calf cramp and that's understandable because the body heat would've gone down".
Jamaican team manager Ian Forbes praised Bolt for "going out there and giving his all" and added that the squad were "very saddened".
"It's like a nightmare".
Third leg man Talbot added: "We've worked so hard for this - we wanted the gold so much, we knew we could do it, and we have".
Where is Usain Bolt's last race?
The Germans, fourth at last year's Olympics, got off to a strong start through Tatjana Pinto, but it was after Lisa Mayer passed on to Gina Luckenkemper that they took a lead that they didn't give up.
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