UFC 158
UFC 158: St-Pierre vs. Diaz was a mixed martial arts competition organized by the Ultimate Fighting Championship, held on March 16, 2013, at Montreal's Bell Centre in Quebec, Canada.
Background
The headline bout showcased Georges St-Pierre defending his welterweight championship against Nick Diaz, whose persistent calls for a title opportunity had generated considerable excitement over a span of two years.
Initially planned for this event was a rematch between Alessio Sakara and Patrick Côté; however, it was canceled due to Sakara experiencing kidney-related health issues.
Sean Pierson was expected to compete against Rick Story but had to withdraw because of an injury, leading to Quinn Mulhern stepping in as his replacement.
Rory MacDonald was scheduled to have a rematch with Carlos Condit but withdrew after sustaining a neck injury. Johny Hendricks replaced MacDonald to face Condit after being removed from his originally scheduled fight with Jake Ellenberger. Subsequently, Ellenberger was matched against returning veteran Nate Marquardt.
Mitch Gagnon pulled out of his matchup with Issei Tamura owing to injury and was substituted by T.J. Dillashaw.
Due to a shoulder injury, Johnny Eduardo was unable to participate in his fight against Yves Jabouin; with no suitable replacement found on short notice, Jabouin was also withdrawn from the event.
Bonus awards
Monetary bonuses of $50,000 were awarded as follows:
- Fight of the Night: Johny Hendricks vs. Carlos Condit
- Knockout of the Night: Jake Ellenberger
- 'Submission of the Night: Not granted as there were no submission finishes.