UFC 143 Present Nick Diaz vs. Carlos Condit, Live at the Mandalay Bay Event Center in Las Vegas, Nevada on February 4, 2012 7PM PT/10PM ET. The fiery and unpredictable Nick Diaz battles “The Natural Born Killer” Carlos Condit for the interim UFC welterweight championship. Plus, Josh Koscheck and Mike Pierce square off to make their case for a future shot at the 170-pound title. Fight Cards: Nick Diaz vs. Carlos Condit Roy Nelson vs. Fabricio Werdum Josh Koscheck vs. Mike Pie Renan Barao vs. Scott Jorgensen Mike Russow vs. Clifford Starks