George B. Seitz directed, uncredited, the sequence featuring Jack Dempsey.

Film debut of Ruth Hussey.

This film was a success at the box office, earning MGM a profit of $462,000 ($8.33M in 2019) according to studio records.

In 2003, George Godfrey was named to the Ring Magazine's list of 100 greatest punchers of all time. In 2007, he was elected into the International Boxing Hall of Fame.

George Godfrey was a heavyweight boxer who fought from 1919-1937. On June 6, 1930, He boxed against future Heavyweight Champion Primo Carnera in Shibe Park, Philadelphia. He was winning the fight when it was suspiciously called in the 6th round and awarded to Canera on a disqualification.

Spencer Tracy had previously worked with director Frank Borzage when they were at Fox in the 1932 film "Young America" .

George Godfrey was a heavyweight boxer who fought from 1919-1937. On June 6, 1930, He boxed against future Heavyweight Champion Primo Carnera in Shibe Park, Philadelphia. The New York Times reported, "George Godfrey, giant negro heavyweight of Leiperville, after hammering Primo Carnera, mammoth Venetian, through four rounds of a scheduled 10 round battle which attracted 35,000 fans and about $160,000 in gate receipts, was disqualified on a foul in the 5th round amid scenes of wild disorder." Many observers considered the 1930 fight to be fixed in Carnera's favor.

The same year that this film came out, New York City required taxi licenses for drivers and created the medallion system for cabs that is still in place. The law limited the number of cabs to 16,900, but the actual numbers dwindled to less than 12,000 until the early 21st century. In 2016, the number of cab permits was just under 13,600.

Several former boxing champions, wrestling champs and noted football players and athletes are among the men attending the Jack Dempsey dinner in the film. And, they all join in the fight at the New York docks, helping the independent cab drivers against the Comet cab company. Among them are former world heavyweight champs Jack Dempsey and James Jeffries, former world light heavyweight champion Maxie Rosenbloom, former All-American athlete and double Olympic gold medal winner, Jim Thorpe; and George Godfrey, Sonny Baker, Man Mountain Dean, and Cotton Warburton.

Cotton (Irvine Eugene) Warburton who appears in this movie amid the Dempsey dinner crowd, is a former All-American quarterback for USC. He was inducted into the college football hall of fame in 1975. As a film editor with Walt Disney studios, Warburton won an Academy Award Oscar for his work on the smash hit, "Mary Poppins" of 1964.

Cotton Warburton, who appears in the final fight scene for the independent taxi owners, is the only Academy Award winner (1964 film editing for "Mary Poppins") who is in the College Football Hall of Fame.