This doesn't happen too often. While both parties agreed to it, rematches like this, especially with a title on the line, usually don't happen so quickly. Yet, it appears Dana White and both Lyoto Machida and Mauricio "Shogun" Rua have signed off on it so the rematch is a reality.

 The first one was an enjoyable fight to watch (from my perspective) and I think the rematch will be even better. I definitely feel like it won't make it to the judges this time around. I also feel like the Machida backlash will force him to do more in the next fight. I wouldn't be surprised if Shogun felt the same way, since he won the fight and still wasn't awarded the victory.

This seems like the right call. Especially since there's no one knocking on the door for a title shot at light heavyweight. With Rampage out of the picture, the Rashad Evans-Thiago Silva winner seems poised for the next shot, and neither of those guys can make as interesting a fight as Shogun part two. 

I think the lack of quality challengers has a lot to do with it, because other fights have had controversial decisions but weren't given immediate rematches. The Rampage-Forrest Griffin fight comes to mind.