I have kind of a Rocky thing going on, where I feel like the other guy will get tired if I just let him wail on me a lot. It's hard to tell from the video, but he does not land any punches to my head while we are standing, all of it is blocked by my forearms and elbows. With the way he was swinging, I also thought I could get him to break his hand on my elbows or forehead. He does land some gut punches though, that was starting to hurt a little.
One minute into the fight itself, I took an inadvertent knee to the nuts:
http://i186.photobucket.com/albums/x252/dotheopposite/nutkneecrop.jpg
That is why I keep bending over after that and stop being aggressive. It took the life out of me for about a round and a half.