>> Frustration and pain into Usain Bolt's final track appearance. Pulling up injured during the World Championships 4x100 meters relay in London on Saturday night. Leaving Britain to stun the United States and win a shock gold medal. Bolt's Jamaican team was struggling in a distant third place when he collected the baton for the final leg.
But as he tried to gain ground, he fell to the track, midway down the home straight. He later put it down to hamstring cramp. His teammates complained a 45 minute wait in the call room hampered their preparations. The concern was backed up by US sprinter, Justin Gatlin, who laid the blame at the television scheduling for the event.
Bolt's collapse was a bitter sweet moment for the 60,000 in the stadium with many coming to farewell one of sports greatest showman. Instead, they saw the home team Great Britain make history.