UFC 150: Henderson vs Edgar II
The main event pitted Benson Henderson against Frankie Edgar in a rematch. Although it was the second encounter to settle the score, their draw power was minimal at best.
Edgar might be known for his thrilling meetings with BJ Penn and Gray Maynard. But his opponent is marred by a less-exciting reputation. Henderson was well known for his point fighting at that point, and few beyond the most hardcore fans were interested in another sparring battle between the two.
In addition, there were no big names in the undercard to draw in viewers. The show ended up with 190,000 buys.