I'm a big Diaz fan, but I was unimpressed by his performance. He seemed completely befuddled that GSP was able to counter his wakigatame strategy, even though GSP is one of the most cerebral and analytical fighters in the game. He didn't even change his tactic after he discovered it was ineffective. I was frustrated at his lack of offense, just like in the last rounds of the Condit fight, but I still think retirement is the wrong move. He needs a better coach/camp.