I'm not trying to earn myself some dubs or cause a huge ruckus. I was at a bar so maybe I really just missed something. But as I was watching it, and in subsequent replays, it appears Soa didn't try to engage with punches throughout the fight, was winning, and then curled up standing for no apparent reason. Then He was hit with one punch (after a half-dozen or so somehow missed him) and he fell immediately. I'm more than willing to assume I missed some significant strike that put him out of sorts, or that he was just so tired but too proud to tap out, but it looked super weird to me.