Georges St-Pierre to fight Nick Diaz
UFC officials announced the matchup on Saturday. The title fight will headline a UFC 158 event, scheduled to take place at the Bell Centre in Montreal.
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It's the third time the UFC has booked the fight. The two were scheduled to meet in October 2011 and again in February, but both bouts fell through, mostly due to a torn ACL injury suffered by St-Pierre.
"It's time to make that big fight against Diaz," St-Pierre said. "I'm doing a favor for the fans. I think it's the fight that will sell the most. The UFC wants to put on the big fights. It's what people want to see."
St-Pierre (23-2) returned from injury last month to defeat Carlos Condit via unanimous decision at UFC 154. There was speculation he'd move on to a proposed matchup against middleweight champion Anderson Silva.
The Canadian champion instead requested Diaz (26-8) who hasn't fought since losing to Condit in February. Diaz received a one-year suspension following the bout after testing positive for marijuana metabolites.
Welterweight Johny Hendricks is again the odd man out even though the former collegiate All-American wrestler is on a five-fight win streak, including a 46-second knockout over Martin Kampmann last month.
"I do feel bad for Johny Hendricks but put yourself in my shoes," St-Pierre said. "This fight (with Diaz) has been waiting to happen for a long time and it's the big fight."