Cool thread, just to nitpick Holyfield vs Qawi was at cruiser, both fights. Best I can think of quick....

HW- Foreman-Lyle
Cruiser-Holyfield Qawi I
Light heavy-Matthew Saad Muhammad-Yaqui Lopez
Supermiddle- Calzaghe-Kessler
Middle-Mike McCallum -James Toney
Light middle- McCallum-Donald Curry
Welter- Leonard- Hearns I
lt welter- Pryor Arguello hard to beat
Lightweight- ditto for Corrales Castillo
Super feather- Pac-Morales I
Feather- Salvador Sanchez-Azumah Nelson
super bantam- Wilfredo Gomez-Zarate

Not as up to snuff on the lower weights, Arce-Carbajal was terrific but Brian Viloria-Solis was also great, maybe that was at lt flyweight? Seems the problem with the really small divisions is when you get outstanding talents like a Ricardo Lopez or Roman Gonzales, they may go their whole career without a proper rival/being in a classic fight.