After successfully defending his UFC welterweight belt, champ Georges St-Pierre got his wish and will defend his title in 2013 against former Strikeforce champ Nate Diaz in the main event of UFC 158. Featured in the co-main event will be a welterweight rematch between Carlos Condit and Rory MacDonald. The action will all go down on March 16, 2013 at the Bell Centre in Montreal, Quebec, Canada.