UFC officials have announced Matt Riddle who recently bowed out of UFC 141 due to an undisclosed illness, has replaced injured Amir Sadollah against Wanderlei Silva protege Jorge Lopez at UFC 143.

UFC 143 takes place Feb. 4 at the Mandalay Bay Events Center in Las Vegas. The event’s main card airs live on pay-per-view. Preliminary-card bouts are expected to air on FUEL TV.

The full card is as follows:

Carlos Condit vs. Nick Diaz (for interim welterweight title)
Josh Koscheck vs. Mike Pierce
Roy Nelson vs. Fabricio Werdum
Renan Barao vs. Scott Jorgensen
Dustin Poirier vs. TBA
Ed Herman vs. Clifford Starks
Alex Caceres vs. Edwin Figueroa
Jorge Lopez vs. Matt Riddle
Rafael Natal vs Michael Kuiper
Justin Edwards vs. Mike Stumpf