Max Schmeling
Max Machon
Anny Ondra
Joe Jacobs
Hans v. Tschammer u. Osten
Hitler's Adjutant Lehback
Alan Walken
Joe Louis
Surgeon Major Schönn
Jack Sharkey
Sharkey's Trainer
Richard Vogt
Vogt's Trainer
Hamburg Boxer
Joe Louis Opponent #1
Joe Louis Opponent #3
British Boxer #4
Arthur Brisbane
Jim Farley
Referee Arthur Donovan
Announcer #1
Josef Goebbels (as Rolf Peter Kahl)
David Lewin
Young Soldier
SA Senior Troop Leader Freilach
First Aid Nurse Maria
First Aid Radio Operator
Housekeeper Lilly
British Admin. Officer
Cabaret Host
Mrs. Damski
Cigar Girl (as Davorka)
Karel Lamac
Housekeeper Martha
Hermann Heller
Referee #1
Referee #2
Referee #3
Referee #4
Young Stribling
Stribling's Father
Page Boy
Referee Smith / Journalist #2
SA Man
Joe Louis Opponent #2
Man in Uniform
Aide of V. Tschammer
Hotel Receptionist
Newspaper Boy #1
Newspaper Boy #2
Member RMVP
Anny's Neighbor Elizabeth Grohmann (as Dunja Bogner)
Neighbor Boy Reinhard Grohmann
Journalist #1
Journalist #3
SA Man #2
Taxi Driver
Werner Lewin
Henry Lewin
Kristallnacht Rioter
Farmhand
Armed Forces Officer (as Vilim Matula)
Supervisor
Gym Owner
British Boxer #1
British Boxer #2
British Boxer #3
Hamburg Referee
Messenger Boy
Reporter #1
Joe Louis' Mother
Ring Woman
Juggler #1
Juggler #2
Juggler #3
Jazz Band Member
Lady in Cabaret (as Lidija Janjic Vukovic)
Ring Doctor (uncredited)
Nazi Officer (uncredited)
Boxing Manager #1 (uncredited)
Belt bearer (uncredited)
Boxing Manager #2 (uncredited)
Sports Reporter (voice) (uncredited)