in no particular order

1. Michael Carbajal vs. Chiquita Gonzalez
2. Alexis Arguello vs. Aron Pryor
3. Diego Corrales vs. Jose Luis Castillo
4. Tommy Hearns vs. Marvin Hagler
5. Tommy Hearns vs. Sugar Ray Leonard

in all fights, the fighters were almost evenly matched. they had to dig down deep to win.

I am sure there are many that I forgot, those come to mind right now.