George C. Scott
Gloves Malloy / Spats Baxter
Trish Van Devere
Betsy McGuire / Isobel Stuart
Red Buttons
Peanuts / Jinks Murphy
Eli Wallach
Vince Marlow / Pop
Harry Hamlin
Joey Popchik ("Dynamite Hands")
Ann Reinking
Troubles Moran ("Dynamite Hands")
Jocelyn Brando
Mama Popchik / Mrs. Updike
Michael Kidd
"Pop" Popchik ("Dynamite Hands")
Kathleen Beller
Angie Popchik ("Dynamite Hands")
Barry Bostwick
Johnny Danko / Dick Cummings
Art Carney
Dr. Blaine / Dr. Bowers
Barbara Harris
Trixie Lane ("Baxter's Beauties of 1933")
Rebecca York
Kitty ("Baxter's Beauties of 1933")
George P. Wilbur
Tony Norton ("Dynamite Hands")
Clay Hodges
Sailor Lawson ("Dynamite Hands")
Charles Lane
Judge / Mr. Pennington
Peter Stader
Barney Keegle ("Dynamite Hands")
Jimmy Lennon Sr.
The Announcer ("Dynamite Hands")
Dick Winslow
Reporter / Tinkle Johnson
Brendan Dillon
Jury Foreman ("Dynamite Hands")
John Hudkins
Hood #1 / Mover #2
Bob Herron
Hood #2 / Mover #1
Denver Mattson
Sparring Partner ("Dynamite Hands")
Jimmy Nickerson
Freddie Fox ("Dynamite Hands")
Harvey Parry
Referee #1 ("Dynamite Hands")
Wally Rose
Referee #2 ("Dynamite Hands")
Fred Scheiwiller
Keegle's Manager ("Dynamite Hands")
James J. Casino
Keegle's Second ("Dynamite Hands")
John McKee
Timekeeper ("Dynamite Hands")
Gary Stokes
Timekeeper ("Dynamite Hands")
Garth Thompson
Irish Goldberg ("Dynamite Hands")
Clifford Happy
K.O. Brown ("Dynamite Hands")
Terry L. Nichols
Kid Gale ("Dynamite Hands")
Larry Hayden
Fighter #4 ("Dynamite Hands")
Patrick Omeirs
Fighter #5 ("Dynamite Hands")
Michael Rodgers
Tiger Barnes ("Dynamite Hands")
Tom Morga
Killer Wales ("Dynamite Hands")
Clarence Beatty
Zito Prima ("Dynamite Hands")
Charlie Murray
Fan #1 ("Dynamite Hands")
Evelyn Moriarty
Fan #2 ("Dynamite Hands")
June McCall
Fan #3 ("Dynamite Hands")
Jack Slate
Fan #4 ("Dynamite Hands")
Michael Lansing
Fan #5 ("Dynamite Hands")
Chuck Hicks
Hood #3 ("Dynamite Hands")
George Fisher
Hood #4 ("Dynamite Hands")
Maidie Norman
Gussie ("Baxter's Beauties of 1933")
Barney Martin
Motorcycle Cop ("Baxter's Beauties of 1933")
Sebastian Brook
Fritz ("Baxter's Beauties of 1933")
Jerry von Hoeltke
.Theater Workman ("Baxter's Beauties of 1933")
Paula Jones
Chorus Girl ("Baxter's Beauties of 1933")
John Henry
Chorus Boy ("Baxter's Beauties of 1933")
George Burns
Himself (uncredited)
Stanley Donen
Nightclub Emcee / Cab Driver (uncredited)
Peter Eastman
Jury Member ("Dynamite Hands") (uncredited)