The UFC has released an extended video preview for UFC 158.UFC 158 is scheduled for March 16 and will take place at the Bell Centre in Montreal, Quebec, Canada. The pay-per-view card will be headlined by a welterweight title fight between Georges St-Pierre and Nick Diaz. The event will be co-headlined by a welterweight scrap between Carlos Condit and Johny Hendricks.MMAFrenzy.com