Which two people should go at it from different era's. Like Marciano and Ali. A few others would be Tyson and Marciano. Or Marciano and Louis both in there primes. Sugar Ray Robinson vs Sugar Ray Leonard. Or Sugar Ray Robinson vs Hopkins. Larry Holmes and Muhammad Ali in their primes. Or Holmes vs Tyson in their primes. Ali vs Tyson. Foreman vs Holyfield in their primes. Holmes vs Holyfield in their primes. Marciano vs Shavers. Fights like that, fights that didn't happen do to era's or fights that did happen but one was old and the other was young. What do you think would have been a good fight when both fighters are in their primes.