Hoss Cartwright seriously injures washed-up boxer Hank Kelly (Michael Conrad in a challenge fight. Feeling guilty, Hoss refuses all entreaties to fight on a professional basis-but younger brother Joe is eager and willing to show off his pugilistic prowess. Featured in the cast are Phillip Pine as Ross Dugan and Mari Aldon as Rubi Kelly. Written by Robert L. Goodwin, "The Fighters" first aired on April 24, 1966. ~ Hal Erickson, Rovi