He really doesn't have anyone left to fight.
In his last fight, Anderson Silva, left, dismantled light heavyweight James Irvin in under a round.
Dan Henderson and Rich Franklin represented the two most substantial threats to Silva's title; both were thoroughly and impressively throttled. Nate Marquardt would probably be discussed as a dark horse for contention, but Silva force-fed him leather, too.
Michael Bisping? A rising contender, but title contention should be predicated on actually beating a top-10 opponent or three. Demian Maia? He's ahead of Bisping in terms of quality opposition, but fans aren't warm to him yet. Yushin Okami? An impressive 6-1 record in the UFC and some unfinished business with Silva -- Okami "won" via a disqualification when Silva illegally struck him on the ground years back -- but a conservative approach.
Mostly justifiable fights, but do they really get anyone excited -- Silva included?Link