Aren't all Jacks white? Okay if you look at how Johnson lost to Klondike, Choysnki, Griffin, and Hart, with numerous draws, ( from 1899-1905 ) if he was white, he probably get a fight with Fitzsimmons, Jeffries, Sharkey, Corbett or Ruhlin, ( From 1899-1905 ) and likely lose the majority of those matches. Johnson was a man born at the right time. by 1905, the best white fighters were old, and the best black fighters were very young.
Part of what made Johnson so good was that he learned everything the hard way. Taking beatings on the way up by fighters not as good as he became allowed him to recover sufficiently. He developed a defensive, stalling kind of style aimed at preserving himself. It might have been more severe for him to bypass these experiences and thoughts of preservation. At 20-0, without those experiences, a younger Johnson might have been thrown at Jim Jeffries and taken a terrible walloping. Never to recover.
Thank you. I wonder if that means Joe Louis would have been the first Jack Johnson, and if we would have had white champions longer and the African-American takeover of boxing would have happened later. I really don't know. It might make a good thread.