Sadollah and Lamas out, Matt Riddle steps in to face Jorge Lopez at UFC 143

The injury bug is out in full effect early in 2012 as both Amir Sadollah and Ricardo Lamas had to pull out of their UFC 143 bouts due to injury. Sadollah was scheduled to face Jorge Lopez, but now Matt Riddle (5-3) will step in to face Lopez after pulling out of his UFC 141 bout due to illness.

UFC 143: Diaz vs. Condit tickets on sale December 16th

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The Ultimate Fighting Championship® announced today that two of the sport’s top welterweight contenders will vie for the interim 170-pound title. Nick Diaz, a fiery and unpredictable southpaw riding an 11-fight win streak, will battle the division’s most fearsome knockout artist, Carlos Condit, when the UFC returns to the Mandalay Bay Events Center in Las Vegas on Saturday, Feb. 4.