Anderson had a really passive bottom game the whole fight, it surprised me. He usually has much better hips than that but he was content on minimizing the damage. Sonnen didn't really do much damage other than the first round. Anderson had plenty of chances to sweep but he didn't turn the corner or open his guard too much. Rib injuries are terrible though, it's hard to function with an injury like that.
This move was pretty nice by Sonnen: