"Battling" Jim Johnson (September 2, 1887 – November 6, 1918) was an American boxer who fought as a heavyweight from 1908 to 1918.
 He had little success and lost with great frequency to top boxers such as Sam Langford, Joe Jeanette, Sam McVey, Harry Wills and Kid Norfolk.
 In spite of this (or because of it), Jack Johnson, the first black world heavyweight champion, gave him a title shot.
 When they fought in Paris in August 1913, it was the first time that two black boxers had fought for the world heavyweight title.
 Battling Jim was the only black fighter Johnson faced during his reign as heavyweight champ from 1908 to 1915.
James Braddock vs. Joe Louis was a heavyweight professional boxing fight for the undisputed heavyweight championship of the world between champion James J. Braddock and challenger Joe Louis.
 The fight took place on June 22, 1937 at Comiskey Park in Chicago, Illinois.
The World Colored Heavyweight Championship was a title awarded to black boxers in the late nineteenth and early twentieth centuries.
 This was the only recognized heavyweight championship available to blacks prior to Jack Johnson winning the world heavyweight title in 1908.
 The title continued to exist until the reign of Joe Louis as universally recognized champ, as the color bar against black heavyweights was enforced during and for a generation after Jack Johnson's reign as world champ.
Obie Walker (September 19, 1911 - May 4, 1989), born Obie Dia Walker in Cochran, Georgia, was a professional boxer.
 Walker was the penultimate World Colored Heavyweight Champion from 9 October 1933, when he out-decisioned title holder George Godfrey in a 10-round fight at the Arena in Philadelphia, Pennsylvania, to 20 July 1935, when he lost the title on a decision in a 15-round bout to former colored heavyweight champ Larry Gains on 20 July 1935 in Tigers Rugby Stadium, Leicester, England.
The White Heavyweight Championship was a title in pretense created when the "White Hopes" of the time that African-American Jack Johnson was the world heavyweight champion had failed to wrest the title from him after four and one-half years.
 The first of the Great White Hopes, former world heavyweight champ James J. Jeffries had failed to vanquish Johnson in 1910, leading to an elimination tournament of "White Hopes" in New York City in 1911.
The height of his pro career and its nadir happened simultaneously when on 24 May 1913, he met Luther McCarty at Tommy Burns's Arena in Calgary, Alberta for McCarty's World White Heavyweight title.
 Burns had been the world heavyweight champ who had lost his title to Jack Johnson, and the title had been created to crown a white heavyweight champ in light of the failures of successive White Hopes to wrest the title from Johnson.
Harris also fought former World Heavyweight Champ Primo Carnera in 1935, seven months after Carnera lost his world title to Max Baer.
In São Paulo, Brazil,Harris knocked out the ex-champ in the seventh round of a 10-round match.
 It was Harris's last fight.
James Walter "Cinderella Man" Braddock (June 8, 1905 – November 29, 1974) was an American boxer who was the world heavyweight champion from 1935 to 1937.
Byers fought Frank Childs for the world colored heavyweight title on 14 September 1898 at the Lenox Athletic Club in New York City, winning on points in a 20-round bout.
 Childs continued to claim the title during Byers' reign, and fought former colored heavyweight champ Bob Armstrong on 4 March 1899 in Cincinnati, Ohio in a fight announced as being for the title.
Joe Louis Arena is a closed multi-purpose arena located in Detroit, Michigan.
 Completed in 1979 at a cost of $57 million as a replacement for the Detroit Olympia, it sits adjacent to Cobo Center on the bank of the Detroit River and is accessible via the Joe Louis Arena station on the Detroit People Mover.
 The venue is named after former heavyweight champion boxer Joe Louis, who grew up in Detroit.

Question: At what venue was the 1937 fight between Joe Louis and the reigning heavyweight champ?
Answer: Comiskey Park