Nobody really knows if weight battle will seriously impact Castillo this time. But it's worth noting that in the mature part of his career, Castillo has never faded in the late rounds of a fight.
As for 140, nobody really knows whats going to be left of these two once they're done with each other. So far it looks to me that Corrales has been much the worse for wear, but Castillo may not be in the clear either, the combination of Chico's power and perhaps one too many "draining camps" will do him in as well.
Although I like return matches, it would be a pitty if both of these guys were finished for fighting each other, or suddenly became unable to focus on a different opponent.
It would really be a shame if Castillo didn't have a couple of years left. His recent years have been amazing, fighting Johnston twice, Mayweather twice, Corrales 3X, plus Cassamayor, Diaz & Lazcano - the whole Top-6 of his era! He probably owns an unaknowledged win over Mayweather and the closest thing to a clear W over Cassamayor.
*****
Incidenatally, has anyone here seen Paul Malignanni? Judging by his low KO percentage and caliber of opposition, this looks like a huge mismatch. Can this guy box like Whitaker or take punch like Pryor? What's the deal?