Bolt in, Powell out

Asafa Powell has pulled out of today’s 100 metres showdown with world record holder Usain Bolt and Tyson Gay because of a lower back injury.
After suffering a groin problem at the Paris Diamond League meet in July, Powell said his back “hurt like hell”.
“I’m very disappointed. I wanted to go out against Usain and Tyson, get a feel for it and have some fun,” he added.
  Bolt said: “It’s sad. People were looking forward to seeing us. It’s still going to be a quick time.”
The last time the trio competed on the same track was at last summer’s World Championships where Bolt set the world record of 9.58 seconds.