Here's the UFC 143 fight card for this Saturday night, Feb. 4, 2012, at Mandalay Bay in Las Vegas:

Main card on PPV, 10 p.m. ET

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Nick Diaz vs. Carlos Condit (interim welterweight championship)
Roy Nelson vs. Fabricio Werdum
Josh Koscheck vs. Mike Pierce
Renan Barao vs. Scott Jorgensen
Ed Herman vs. Clifford Starks

Prelims on FX, 8 p.m. ET

Dustin Poirier vs. Max Holloway
Alex Cacers vs. Edwin Figueroa
Matt Brown vs. Chris Cope
Matthew Riddle vs. Henry Martinez

Prelims on Facebook

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Rafael Natal vs. Michael Kuiper
Dan Stittgen vs. Stephen Thompson