Houston Alexander broke his hand. A new light heavyweight opponent for Andre Gusmao at UFC 98 to be announced quickly.
Houston is the latest in a long line of fighters that have been forced out of UFC 98 due to injury. First Frank Mir pulled out, forcing a change of the main event. Josh Koscheck, James Irvin, and Yushin Okami all pulled out of their fights, and were replaced by others in their division.
This may be a stroke of luck for Houston, who was probably on his way to being submitted by Gusmao. It remains a mystery why they keep putting him against black belts.