Tyson does not belong in the conversation of those ranked above Rocky. Ali, Lewis, Louis, and Foreman are reasonable. Holmes wasn't that heralded but is an all-timer and a bad matchup for Rock. Rocky-Holyfield would have been an all-time classic fight.

Tyson though either walked through his opponent or lost. He never rose to a challenge - whenever he was met with adversity, he lost. And Marciano would not just fold like Michael Spinks.