Portrait of legendary fighter John L. Sullivan, aka "The Boston Strong Boy", and his meteoric rise to become the first gloved World Heavyweight Champion. But the famed boxer is no match for the two women with holds on him, love struck actress Kathy Harkness and the real love of his life, beautiful but unyielding Anne Livingstone.
Linda Darnell
as Anne Livingston
Greg McClure
as John L. Sullivan
Barbara Britton
as Kathy Harkness
Otto Kruger
as Richard Martin
Wallace Ford
as McManus
George Mathews
as John Flood
Robert Barrat
as Billy Muldoon
Joel Friedkin
as Michael Sullivan
Simon Semenoff
as Mons. Claire
Harry Crocker
as Arthur Brisbane
Rory Calhoun
as James J. 'Gentleman Jim' Corbett
J.M. Kerrigan
as Father O'Malley
