Gus

Ed Asner

as Hank Cooper

Don Knotts

as Coach Venner

Gary Grimes

as Andy Petrovic

Tim Conway

as Crankcase

Louise Williams

as Debbie Kovac

Dick Van Patten

as Cal Wilson

Ronnie Schell

as Joe Barnsdale

Bob Crane

as Pepper

Johnny Unitas

as Himself

Dick Butkus

as Rob Cargil

Harold Gould

as Charles Gwynn

Tom Bosley

as Spinner

Virginia O'Brien

as Reporter

Kenneth Tobey

as Asst. Warden

Richard Kiel

as Tall Man

Dick Enberg

as Atoms' Announcer

Fred Dryer

as Atoms player (sideline & showers) (uncredited)

Liam Dunn

as Dr. Morgan

Warde Donovan

as Butcher

Larry Burrell

as Locker Room Announcer

Titos Vandis

as Seth Petrovic

Hanna Landy

as Molly Petrovic

Irwin Charone

as Hotel Clerk

Timothy Brown

as Calvin Barnes

Jackson Bostwick

as Stjepan Petrovic

John Orchard

as Pemberton Captain

Larry McCormick

as N.Y. Broadcaster

Jack Manning

as Mayor

Jeanne Bates

as Nurse