Ok I didn't read all the responses. Here's my take on why the quick rematch. Cain went into the first fight injuried. Seeing how it was the first Fox card pulling out with an injury was not an option. I'm sure Dana told him to take the fight and if he loses he will only have to fight one person then get the rematch. Plus JDS has to fight someone. Can't have him sitting around until a clear cut number 1 contender appears!