Several weeks had elapsed before Georges St-Pierre (22-2 MMA, 16-2 UFC) discovered that instability in his right knee was actually a torn ACL and meniscus.
The UFC welterweight champ hyperextended the knee during a wrestling practice while preparing for his fight with Nick Diaz at UFC 143.
However, he exhibited few of the symptoms of an ACL tear and didn't get confirmation of the injury until Monday, when his personal doctor relayed the results of an MRI.
The long-reigning titleholder today assumed responsibility for perhaps pushing his recovery from a previous knee injury too swiftly, and he warned he'll have the last word for those who criticize him.
"Right now, a lot of people are saying bad things about me because it's easy to hit a guy when he's down," St-Pierre said. "Life goes up and down. Right now, I'm down. A month ago, I was world champion, and I was on top of the world. Now I'm in a downfall. But you recognize a champion from how he comes back from a loss, not how he is when everything goes well.
"And everybody that says bad things about me right now, mark my word, right now I'm in a downfall in my life, but in a few months, I'm going to be back stronger than ever, and I will be champion again. This, I promise my fans."
St-Pierre, who won't actually surrender his title during the layoff, has yet to decide who will perform a reconstructive surgery on his right ACL that is expected to keep him out of action for six to nine months.
"I know Georges has the discipline and the determination to be back to the same level of competition that he was before that injury, said Sebastien Simard, St-Pierre's personal doctor.