Hector "Macho" Camacho

Tales have it that he used to make love to three different women before his fight...
ROY JONES JR.
played Basketball before his fight with Eric Lucas...
ROBERT DE NIRO AS JAKE LAMOTTA IN THE RAGING BULL, AND JAKE HIMSELF

De Niro was so real in his portrayal that he won the Oscar for Best Actor in 1980. Jake was so impressed with him that he thought he could pass as a real middleweight fighter.
CINDERELLA MAN- THE MOVIE
THE REAL JAMES BRADDOCK AND MAX BAER

The movie distorted Max Baer's legacy, here's an excerpt from wikpedia...
Depiction of Max Baer
Max Baer is portrayed as a brutal person who behaves inappropriately outside the ring and viciously inside it (to the point of killing two opponents in the ring). Baer's relatives and boxing historians have criticized the film's depiction of him, arguing that he killed only one man in the ring, Frankie Campbell, not two (in the movie, it is stated that he also caused the--slightly delayed--death of Ernie Schaaf, something commonly claimed by the press at the time, but never proven), and was considered by many to be a gentleman. This is supported by historical evidence which shows that Baer's demeanor, both within and outside the ring, was much less brutal than the film portrayed, and he often cracked jokes.
However, the portrayal of Max Baer's style of boxing in the movie is very close to what happened in the actual boxing contest.
The author of the book on which the movie was based has asserted that Baer was kind, charismatic, loved and respected, and pointed out the emotional pain that Baer endured the rest of his life following Campbell's death, and the fact that he gave purses from his bouts to Campbell's family to help give Campbell's children an education.
The depiction of Max Baer in the film is no different from his depiction in the press at the time, and this image was often used by promoters to attract interest in his fights. Also, the Max Baer on screen never actually boasts about killing Campbell or Schaaf, although he does warn Braddock that he may die if he fights him, and offers to "take care" of his wife once he is gone, blowing a kiss to her as he does so. The real Max Baer (who was also an actor) starred as a much more negatively depicted, hostile boxer in the movie The Harder They Fall, which holds many similarities to him in real life.
Max Baer was actually a Jewish activist--he wore a large Star of David on his boxing shorts in fights. That star makes it easy to distinguish Baer from Braddock in the black and white films of the original boxing contest.
Rolando "Bad Boy from Dadiangas" Navarrete didn't become a popular BAD BOY for nothing, he lived up to that name --- his short-lived boxing reign paled in comparison to his off the ring notorious exploits that never failed to make the headlines.
There were tales during his prison term for rape in Hawaii, he never never backed down from any challenge. It's not hard to imagine the way he looks now that his biggest brawls were with the mean, 6-footer convicts who tried to test his boxing skills inside the cell. His long list of violent fits were legendary. Some stories were noted by wikipedia...
.>...On February 14, 2008, Rolando Navarette, "The Bad Boy from Dadiangas" was out of danger, after being stabbed in the neck by Racman Saliling, tenant at the boarding house he owns in Bula, General Santos City, using ice pick. Navarette was also involved in 2 previous attacks: in 2005, he was hit with a steel pipe by a female neighbor; in 2006, a security guard clubbed his leg with a shotgun at a fishport.