How things change so quickly in the world of boxing these days, especially when you got somebody like Manny Pacquiao whose now being called out by almost every notable and semi-notable boxers within and beyond his weight class.

The great Bob arum, Manny's promoter, said looking beyond David Diaz is not something they'd like doing but if Manny does breeze by him with relative ease, he would definitely prioritize a championship unification match between Manny Pacquiao and Nate Campbell. Assuming Manny gets David Diaz's WBC lightweight belt, Manny could be looking at Nate Campbell for his next fight if Bob has his way. Nate Campbell has the rest of the alphabet belts of WBA, WBO and IBF sanctioning bodies.

This option jeopardizes the immediate re-match hopes of Juan Manuel Marquez. Bob, for one, thinks a Pacquiao-Campbell championship match for all the marbles with definitely be a huge fight and would definitely top a Marquez rematch in the priority list. Juan Manuel Marquez, up to recently, has continued to bellyache and has publicly pronounced that if a Pacquiao-Marquez 3 will not happen, it is because Manny doesn't want it to happen. A statement made by Marquez short of calling Manny a coward.

This Pacquiao versus Campbell unification bout may also have a slight effect on Joel Casamayor chances of landing a match against the Pacman. After an upset win against Michael Katsidis recently, he has publicly announced his desire for a big money fight against Manny or even Marco Antonio Barrera.

Casamayor may also be in a low priority in Manny's list but in my humble opinion, if he wants to "corner" Manny for a big money fight, I think it is his best interest to fight Campbell immediately and win his 3 alphabet belts in order to up his rep and get the Pacquiao camp's attention.