George C. Scott

Character: Gloves Malloy / Spats Baxter

Trish Van Devere

Character: Betsy McGuire / Isobel Stuart

Red Buttons

Character: Peanuts / Jinks Murphy

Eli Wallach

Character: Vince Marlow / Pop

Harry Hamlin

Character: Joey Popchik ("Dynamite Hands")

Ann Reinking

Character: Troubles Moran ("Dynamite Hands")

Jocelyn Brando

Character: Mama Popchik / Mrs. Updike

Michael Kidd

Character: "Pop" Popchik ("Dynamite Hands")

Kathleen Beller

Character: Angie Popchik ("Dynamite Hands")

Barry Bostwick

Character: Johnny Danko / Dick Cummings

Art Carney

Character: Dr. Blaine / Dr. Bowers

Barbara Harris

Character: Trixie Lane ("Baxter's Beauties of 1933")

Rebecca York

Character: Kitty ("Baxter's Beauties of 1933")

George P. Wilbur

Character: Tony Norton ("Dynamite Hands")

Clay Hodges

Character: Sailor Lawson ("Dynamite Hands")

Charles Lane

Character: Judge / Mr. Pennington

Peter Stader

Character: Barney Keegle ("Dynamite Hands")

Jimmy Lennon Sr.

Character: The Announcer ("Dynamite Hands")

Dick Winslow

Character: Reporter / Tinkle Johnson

Brendan Dillon

Character: Jury Foreman ("Dynamite Hands")

John Hudkins

Character: Hood #1 / Mover #2

Bob Herron

Character: Hood #2 / Mover #1

Denver Mattson

Character: Sparring Partner ("Dynamite Hands")

Jimmy Nickerson

Character: Freddie Fox ("Dynamite Hands")

Harvey Parry

Character: Referee #1 ("Dynamite Hands")

Wally Rose

Character: Referee #2 ("Dynamite Hands")

Fred Scheiwiller

Character: Keegle's Manager ("Dynamite Hands")

James J. Casino

Character: Keegle's Second ("Dynamite Hands")

John McKee

Character: Timekeeper ("Dynamite Hands")

Gary Stokes

Character: Timekeeper ("Dynamite Hands")

Garth Thompson

Character: Irish Goldberg ("Dynamite Hands")

Clifford Happy

Character: K.O. Brown ("Dynamite Hands")

Terry L. Nichols

Character: Kid Gale ("Dynamite Hands")

Larry Hayden

Character: Fighter #4 ("Dynamite Hands")

Patrick Omeirs

Character: Fighter #5 ("Dynamite Hands")

Michael Rodgers

Character: Tiger Barnes ("Dynamite Hands")

Tom Morga

Character: Killer Wales ("Dynamite Hands")

Clarence Beatty

Character: Zito Prima ("Dynamite Hands")

Charlie Murray

Character: Fan #1 ("Dynamite Hands")

Evelyn Moriarty

Character: Fan #2 ("Dynamite Hands")

June McCall

Character: Fan #3 ("Dynamite Hands")

Jack Slate

Character: Fan #4 ("Dynamite Hands")

Michael Lansing

Character: Fan #5 ("Dynamite Hands")

Chuck Hicks

Character: Hood #3 ("Dynamite Hands")

George Fisher

Character: Hood #4 ("Dynamite Hands")

Maidie Norman

Character: Gussie ("Baxter's Beauties of 1933")

Barney Martin

Character: Motorcycle Cop ("Baxter's Beauties of 1933")

Sebastian Brook

Character: Fritz ("Baxter's Beauties of 1933")

Jerry von Hoeltke

Character: .Theater Workman ("Baxter's Beauties of 1933")

Paula Jones

Character: Chorus Girl ("Baxter's Beauties of 1933")

John Henry

Character: Chorus Boy ("Baxter's Beauties of 1933")

George Burns

Character: Himself (uncredited)

Stanley Donen

Character: Nightclub Emcee / Cab Driver (uncredited)

Peter Eastman

Character: Jury Member ("Dynamite Hands") (uncredited)