In Reel Life: There's snow on the streets.
In Real Life: That's Toronto in August. Specifically, Victoria Street got the summer-snow treatment.
In Reel Life: Desperate to pay the bills, Jim goes to
Madison Square Garden, hat in hand, literally. He's begging from the minions of the flamboyant and powerful promoter Jimmy Johnston (Bruce McGill). Johnston, with a sneer, reluctantly slips a few quarters into the hat.
In Real Life: Jim did go begging straight to Gould, who got
the $35 he needed straight from Johnston.
In Reel Life: Braddock goes on "relief." He says he got $19 a month,
but it isn't enough.
In Real Life: Mostly true. For 10 months, according to Schaap,
the Braddocks got $24 a month.

In Reel Life: Braddock's first big fight back, against John
"Corn" Griffin, takes place at the Garden. The next two are
also at MSG, with the final bout in the movie, the heavyweight title
fight against Max Baer, taking place at the Madison Square Garden Bowl in Long Island City.
In Real Life: The first fight was actually at the MSG Bowl in Long
Island City, not in Madison Square Garden. The next two bouts were at
Madison Square Garden, as depicted in the film. And the Braddock-Baer
bout did take place in Long Island City.
All of the bouts, in fact, were filmed in Toronto at the old Maple Leaf Gardens, dolled up with a Madison Square Garden marquee. When it stood in for the Bowl instead of the indoor MSG, the roof was digitally removed.
In Reel Life: Braddock goes almost directly from being a
longshoreman to fighting contender Corn Griffin (Art Binkowski). He
doesn't get any chance to train for the fight.
In Real Life: True.
In Reel Life: Al Fazin (Rance Howard) is the ring announcer for
the fight, and also for the heavyweight title fight.
In Real Life: That's Ron Howard's father. "The Braddock-Baer
fight was the first fight my father ever remembers hearing," says
Howard in the film's production notes. "When I was growing up, my dad would always tell me the story of Jim Braddock."

In Reel Life: Braddock's a very good, if not great, boxer.
In Real Life: Crowe trained for the role with Angelo Dundee,
Muhammad Ali's former trainer, who actually saw Braddock fight a few
times. According to the studio, Crowe's hardcore training routine
allowed him to weigh in for this film at 178. As Captain Jack Aubrey
in "Master and Commander," Crowe had weighed 228 pounds. No word on
how Zellwegger transformed herself from Bridget Jones into the much
more svelte Mae Braddock.
In Reel Life: In his fight against Art Lasky (Mark Simmons),
Braddock suffers a terrific blow to the head. Gould is horrified.
In Real Life: That's real, but not intentional. All the filmed
slugging is supposed to be fake, with realism added in later with
clever editing and special effects. In this case, Simmons missed his
fake punch and got Crowe hard. Giamatti was truly shaken.
In Reel Life: After beating Lasky, Braddock returns to the
crowded relief office and, carrying a thick wad of bills, pays the
relief office back.
In Real Life: Braddock won $4,100 for beating Lasky, and,
according to Schaap, after he got his paycheck, he privately handed
$300 back to his caseworker. That man told him to keep the cash until
after the title bout. Braddock handed him an IOU.