Treat Williams as Jack Dempsey

Sam Waterston as Doc Kearns

Sally Kellerman as Maxine Cates

Victoria Tennant as Estelle Taylor

Peter Mark Richman as Tex Rickard

Jesse Vint as Bernie Dempsey

Robert Harper as Damon Runyon

John McLiam as Hyrum Dempsey

Bonnie Bartlett as Celia Dempsey

James Noble as Gavin McNab

John Lehne as Gene Normile

Gene Normile as Otto

Michael McManus as Babe Ruth

Mark L. Taylor as Price

Jimmy Nickerson as Gene Tunney

Jack O'Leary as Jerry the Greek

Walker Edmiston as Announcer

Richard Karron as Morgan

Clay Hodges as Jess Willard

Terence McGovern as Benson

Michael Fox as Judge Dooling

Richard Winterstein as Trent

Thomas Bellin as Howard Dillard

Glenn Robards as Barbour

Vernon Scott as Small Boy

Lana Schwab as Woman at Fight

Galen Thompson as Eddie