Trying to figure out what to make of the Overeem-Sefo line lump. You're looking at your classic kickboxer vs. MMA fighter, so you've got to believe if Overeem gets this to the ground (and he'd be foolish not to do everything in his power to try) then the fight's over. If he has trouble, or decides to stand and bang, Sefo's going to knock him out. Overeem's got the ridiculous experience advantage with 50+ fights over a near 15 year career - but they've both got a lot of combat sport mileage, are both old, and have both been out of the cage for a while. Too many variables for me to make a play - but if I had to, I'd lean Overeem.