If you look at Sonnen's past, this happens to him a lot. He'll control the fight, get takedowns, ground and pound, and keep his top position. He doesn't work much (if any) BJJ in his training and it shows every time he gets submitted. 8 of his 11 losses have come from submission, most in fights he was winning. That was pretty heartbreaking to see him lose like that. What pissed me off even more is how all the casual MMA fans were cheering for Silva and claiming it wasn't a questionable tap out.