With Frank Mir's loss at the hands of Junior dos Santos he is now in an interesting situation.
He is one of the most accomplished heavyweights in the history of the organization but does not appear to be close to JDS or heavyweight's No. 2 baddest man—Cain Velasquez. With those two set to rematch anyway, there are not many interesting options out there for Mir to take on.
That's where Brock Lesnar's highly-publicized appearance at UFC 146 and subsequent meeting with Dana White. While any talk of a Lesnar return is purely speculation at this point, who he would fight is a very interesting proposition.
Lesnar is a cash cow for the UFC. If he does make a comeback, it is hard to envision a scenario in which he is not the main event. The problem is he has lost to both Alistair Overeem and Cain Velasquez and is not close to being deserving of a title shot so finding a big enough draw to put across from Lesnar is an issue.
Mir and Lesnar have a history together and the two fought their second fight at the legendary UFC 100 event. With the series between the two tied at one win a piece a rubber match to finally settle the score could sell a ton of pay-per-views for the UFC.
While this fight may be a long shot, the chance to finally settle the score between these two stars and keep them both in the spotlight is worthy of the No. 1 spot in these power rankings.