I also know that Marvin Hagler only got paid $50 bucks for his 1st fight, Mike Tyson got paid $500 for his 1st fight.

And of course JMM turned down a 1 million+ payday to fight Chris John for $35,000 and get robbed in Indonesia. Never understood why.

From the top of my head, and they're pretty accurate.

Tyson 22 million vs. Spinks 13 million in '88.
Tyson 25 million vs. McNeely 1 million in comeback fight for Tyson.

Hell if some of these figures on John Ruiz are accurate the guy probably made more than $20 million+ in the ring in his career. John fukking Ruiz! But I can't hate, get your money Ruiz!