I wont take the time to put them in a particular order, but- Rocky Marciano (even though he'd be garbage today) Julio Cesar Chavez Sugar Ray Leonard Mike Tyson Muhammad Ali Roy Jones Junior Sugar Ray Robinson Floyd Mayweather Jr. Marvin Hagler and... Manny Pacquiao (because it wont be long before he's cemented as an all time top 10) Now. I only like 4 of those fighters. Mayweather, Leonard, Tyson, and Roy Jones. But the rest had undeniable skill. My personal favorites are completely different.