Hopefully all these guys haven't been whored out in post yet. But...

Chin: Kid Gavillian
Strength: George Foreman
Power: Marvin Hagler
Heart: Arturo Gatti
Smarts: Muhammad Ali
Stamina: Joe Louis
Handspeed: Meldrick Taylor
Footwork: Willie Pep
Defense: Nicolino Locche
Combinations: Mike Tyson