Too many to mention but:

Margarito v Cotto/Williams/pbf

PBF-Oscar/Hatton

Hatton-Cotto/Castillo

Ponce De Leon-Isreal Vazquez-Rafa Marquez

Arce-Darchinyan

This is all I can think of for now,the list would get too big otherwise and I think they are all realistic fights that can be made excepy maybe Cotto-Hatton,when Rick mentioned his next 3 oponents,none of them was Cotto.