Barbra Streisand as Hillary Kramer

Ryan O'Neal as Eddie "Kid Natural" Scanlon

Paul Sand as David

Whitman Mayo as Percy

Patti D'Arbanville as Donna

Chu Chu Malave as Luis

Richard Lawson as Hector Mantilla

James Gregory as Gough

Richard Altman as Tour Guide

Seth Banks as Newsman

Lindsay Bloom as Girl In Bed

Earl Boen as Nose - Kline

Roger Bowen as Owner Sinthia Cosmetics

Badja Djola as Heavyweight In Gym

Rory Calhoun as Fighter In Kid's Camp

Sue Casey as Brenda

Alvin Childress as Man In Gym

Kristine DeBell as Lucy

Al Denava as Gomez

Rene Dijon as Nose - Moss

Shay Duffin as Fight Announcer

Murphy Dunne as Mario

Art Evans as Fighter

Ron Henriquez as Fighter

Anthony Renya as Fighter

Maurice Sneed as Fighter

Lee Harman as Newsman

Vic Heutschy as Newsman

Ernie Hudson as Killer

David Ketchum as Photographer

Jimmy Lennon Sr. as Announcer

Len Lesser as Trainer At Big Bear

Eddie 'El Annimal' Lopez as Boxer At Kid's Camp

Gilda Marx as Exercise Teacher

Denver Mattson as Referee

Bill Phillips Murry as Mantilla's Cornerman

Brent Musburger as T. V. Show Host

Robert Nadder as Nose - Bean

Harvey Parry as Referee In Long Beach

John Reilly as Alan Crane

Tim Rossovich as Cannibal

Jack Somack as Murry

Richard Steele as Boxer In Kid's Camp

Karen Hale Wookey as Newswoman

Darrell Zwerling as Sheldon

Dennis Falt as Ringside Reporter (uncredited)

Luther Fear as Fight Fan (uncredited)

Ralph Gambina as Trainer (uncredited)

Raven Grey Eagle as Man (uncredited)

Jack Griffin as Boxing Coach (uncredited)

Roslyn Kind as Aerobics Class Dancer (uncredited)

Monty O'Grady as Party Guest (uncredited)

Leoda Richards as Party Guest (uncredited)

Rick Sawaya as Fighting Cop (uncredited)

Jack Slate as Man at Gym (uncredited)