Watch UFC 107 Live Stream. Its going to be an action packed rumble in Memphis as the two most dangerous lightweights in MMA clashes. The fight between BJ Penn vs Diego Sanchez two of the most feared fighters in ufc cage right now. The fight will be for the UFC lightweight championships. The Sanchez vs Penn fight will be held at FedExForum in Memphis and fans in there are already going frenzy. If you are looking for this fight for a free watch, then you can go to the other site as they can give you free watch. There is the Sopcast, the Ustream, the Justin, and so on. Or you can just subscribe to the official site of the UFC. This will be a historic fight for UFC. UFC 107 Video Replay.