Floyd Mayweather v. Bernard Hopkins (circa 1999)?
Take the 147-154 Mayweather, could he have gone up to 160 and taken on the prime Bernard Hopkins?
I was thinking about some of the great guys who started at 130-135, and the only one that I could think of (in recent years) who was able to go way up and be successful was Roberto Duran.
Thoughts on either?