The fight wasn't fixed, Ortiz just decided to quit.

I have been thinking about Ortiz's actions during and after the fight and I must this is the most intelligent post I have read on any forum about the events. Ortiz's behaviour was just strange in general. He was getting outboxed and nailed, true, but he also seemed to land a few good shots in that fourth round and drove Floyd back into the ropes with his combinations. Then he decides to commit one of the most blatant possible fouls by literally leaping into a headbutt? After this he kisses Floyd on the cheek, apologises, and then apologises yet again, his defence completely down while in punching distance. Floyd lands a hook, Ortiz STILL doesn't put his guard up or even try to evade more blows but instead just looks at Cortez. Floyd appears to pause for a moment, as if to assess the situation, then throws that right hand and floors him. Ortiz is all smiley afterwards and doesn't seem to care much about the fact that he was just knocked out by a cheap shot. You also have Floyd's behaviour -- putting his hands on Ortiz's throat at the weigh-in, fighting more aggressively than usual in the actual bout, and then exploding at Merchant in an even more extreme way than he did after the Baldomir match. It was just a bizarre night. If Ortiz DID quit, then it wasn't after the sucker punch...it was when he launched himself into that obvious headbutt. He didn't try to conceal it or slip it in -- it was like a kid lashing out on the playground, knowing the consequences but doing it anyway. The fact that he kept apologising and never tried to defend himself also seems to indicate that, at that point, he just didn't want to be in the ring anymore. It's weird, but that's the only way I can make sense of it all. Ortiz seems to be someone like Judah, who just has unpredictable mental meltdowns. Even when he's upset or crushed he covers it up with a big grin and tries to sound completely casual. (Apparently he broke down and was crying in his changing room after the fight?)