Not too good IMO i think majority of them would of beaten him.

Younger Shane Mosley vs Miguel Cotto = Mosley by UD
ODLH vs Miguel Cotto = ODLH by UD
Jose Luis Lopez vs Miguel Cotto = Lopez by TKO
Ike Quartey vs Miguel Cotto = Quartey by UD
Pernell Whitaker vs Miguel Cotto = Whitaker by UD
Felix Trinidad vs Miguel Cotto = Tito by TKO

I know im probably going to get a lot of stick from Cotto fans but really i can't see Cotto beating most of the elite 90's Welterweights.