Strikeforce: Ronda Rousey vs. Sarah Kaufmann Teaser (Video)

Check out the first video trailer for the August 18th Strikeforce main event, as womens Bantamweight champion "Rawdy" Ronda Rousey (5-0) attempts to defend her belt for the first time, when she tangles with Sarah Kaufmann (15-1) in a five round main event.