In the 100m final last night, Bolt broke the Olympic record in 9.63 seconds, his second fastest time ever. It would have been the first time in history that the whole field completed the race in under 10 seconds if Asafa Powell had not had to pull up short due to a recurring groin injury.
“It was my old groin injury that reoccurred,” Powell said. “I felt it and it started to go. You never want to get ...