Valentijn Overeem forces Ray Sefo to tap out in the very first round

Strikeforce heavyweight submission machine, Valentjin Overeem has tonight marked his promotional debut with a win, defeating K-1 legend, Ray Sefo in the very first round in East Rutherford, New Jersey.
Overeem with an early low kick, answered by Sefo. Sefo with a nice combination before Overeem fires a high kick. Sefo lands a big right hand and backs Overeem up. The two continue to exchange but Sefo is getting the better of it on the feet. With that Overeem takes him to the ground, landing in side control. Overeem locks up a neck crank and forces the tap.