James Caan as Jonathan E.

John Houseman as Bartholomew

Maud Adams as Ella

John Beck as Moonpie

Moses Gunn as Cletus

Pamela Hensley as Mackie

Barbara Trentham as Daphne

John Normington as Executive

Shane Rimmer as Rusty, Team Executive

Burt Kwouk as Japanese Doctor

Nancy Bleier as Girl in Library

Richard LeParmentier as Bartholomew's Aide

Robert Ito as Strategy Coach for Houston Team

Ralph Richardson as Librarian

Valli Kemp as Woman at Party (uncredited)

Dick Enberg as Pregame Announcer (uncredited)

Tony Brubaker as Blue (uncredited)

Burnell Tucker as Jonathan's Captain of Guard (uncredited)

Angus MacInnes as Jonathan's Guard

David Griffin as Man Collecting Coats