The next UFC pay-per-view will take place on March 16th from the Bell Centre in Montreal and the UFC has finalized the fight card, with the preliminary card set to air on FX and Facebook. 
The complete fight card will have 13 fights, with the preliminary card beginning at 6:35 p.m. ET/3:35 p.m. PT with four fights on the UFC Facebook page and will then continue on FX at 8 p.m. ET/5 p.m. PT with another four fights.
The main card on pay-per-view will begin at 10 p.m. ET/7 p.m. PT and will be headlined by Georges St-Pierre (23-2) defending the UFC welterweight title against former Strikeforce welterweight champion Nick Diaz.
Along with the welterweight title fight, the main card will see two other welterweight fights as former UFC interim welterweight champion Carlos Condit (28-6) faces Johny Hendricks (14-1) and Jake Ellenberger (28-6) meets former Strikeforce welterweight champion Nate Marquardt (35-11-2).
The current UFC 158: GSP vs. Diaz fight card is below:
Main Card: (PPV – 10 p.m. ET/7 p.m. PT)
Georges St-Pierre (23-2) vs. Nick Diaz (27-8-1)
Carlos Condit (28-6) vs. Johny Hendricks (14-1)
Jake Ellenberger (28-6) vs. Nate Marquardt (35-11-2)
Nick Ring (13-1) vs. Chris Camozzi (18-5)
Mike Ricci (8-3) vs. Colin Fletcher (9-2)
Preliminary Card: (FX – 8 p.m. ET/5 p.m PT)
Patrick Cote (19-8) vs. Bobby Voelker (24-8)
Antonio Carvalho (15-5) vs. Darren Elkins (16-2)
Dan Miller (14-6, 1NC) vs. Jordan Mein (26-8)
John Makdessi (10-2) vs. Daron Cruickshank (12-2)
Preliminary Card: (Facebook – 6:35 p.m. ET/3:35 p.m. PT)
Rick Story (14-6) vs. Quinn Mulhern (18-2)
TJ Dillashaw (7-1) vs. Issei Tamura (7-3)
Yves Jabouin (18-8) vs. Johnny Eduardo (26-9)
George Roop (12-10-1) vs. Reuben Duran (8-4-1)