Nick Diaz vs. Carlos Condit headlines the UFC 143 fight card on Feb. 4, 2012 at the Mandalay Bay Events Center in Las Vegas.

Georges St-Pierre was scheduled to defend his welterweight title, but was forced out due to a knee injury. In the mean time, Diaz and Condit will battle for the interim belt.

Check out the current lineup below.

Main Card
Nick Diaz vs. Carlos Condit
Roy Nelson vs. Fabricio Werdum
Josh Koscheck vs. Mike Pierce
Renan Barao vs. Scott Jorgenson
Ed Herman vs. Clifford Starks

Undercard
Dustin Poirier vs. Erik Koch
Alex Caceres vs. Edwin Figueroa
Matt Brown vs. Chris Cope
Matthew Riddle vs. Henry Martinez
Dan Stittgen vs. Stephen Thompson
Rafael Natal vs. Michael Kuiper