Top 5 greatest boxers since 2000 (sorry 2005 is a weird cut off point) off the top of my head. 1. Manny Pacquiao 2. Floyd Mayweather 3. Bernard Hopkins 4. Roman Gonzalez 5. Erik Morales? I'm surprised Morales ended up in the top 5 but off the top of my head I can't think of anyone greater since 2000 expect those four. I want to give an honorable mention to Pongsaklek Wonjongkam since no one else is going to mention him.