|Georges St. Pierre delivers a blow to Josh Koscheck during UFC 124 at the Bell Centre in Montreal, Que., Dec. 11, 2010. (ERIC BOLTE/QMI Agency)
Maybe Georges St. Pierre isn't a robot after all.
St. Pierre, the UFC's welterweight champion, pulled out of next week's 170-pound title fight with Carlos Condit Tuesday due to a knee injury. The two were scheduled to meet Oct. 29 at UFC 137 in Las Vegas.
UFC president Dana White broke the news on his Twitter account.
"I just land in NYC and what do I always say!?" White tweeted. "I have to deal with bad (expletive) everyday!! GSP is out with an injury!!!"
It's the first time in more than four years that the Montreal-based fighter, known for his low-risk, technical style that is effective -- he's on a nine-fight win streak -- but boring to all but the most hard-core MMA fans, has withdrawn from a fight because he's been hurt in training.
St. Pierre was forced out of a meeting with Matt Serra at UFC 67 in early 2007, also due to a knee injury. That fight took place at UFC 69 two months later and Serra earned a TKO win, the last time GSP has been beaten.
With St. Pierre hurt, the co-main event between B.J. Penn and Nick Diaz will be bumped up to top billing but it will stay a three-round fight.
Condit (4-1 in the UFC and 27-5 overall) won't fight at all on the card at Mandalay Bay Events Center.
"We will sit Carlos to wait for GSP," White added on Twitter. "It's looking so far like he could be ready in a couple months. Still early to tell tho."
GSP was originally going to defend his belt against Diaz at UFC 137 but the former Strikeforce champ was replaced with Condit, who was signed to face Penn, when he missed pre-fight press conferences in Toronto and Las Vegas.