The reigning UFC welterweight champion, Georges St-Pierre suffered a big setback in training Tuesday in his home of Montreal, Quebec as he sparred in preparation for his title defense at UFC 137, Oct. 29. Head training instructor, Firas Zahabi had this to say on the details of the injury sustained.

“He was sparring today and he hurt his knee,” Zahabi confirmed to Sherdog. “I had a feeling it was bad, but then, once he cooled down, he started limping. There’s no way he would be able to fight.”

It was during a shoot box training session, consisting of standup sparring and takedown attempts. The exact sequenced exercise that caused the injury was too complex to explain in words said Zahabi, it would have to be shown in person.

“It was a weird thing. I can’t really explain it. I’d have to show you,” said Zahabi.

The training was not for nothing said Zahabi as the skills gained will be retained for the expected upcoming battle against Condit, following the healing of the injury.

“Of course, everybody is disappointed,” said Zahabi. “We made a lot of sacrifices. We had a lot of people come in to help us train. We put a lot of man hours into getting ready for this fight. But it’s not going to waste, it’s just being put on hold.”