<P> Mason Alan Dinehart ( born April 30 , 1936 ) , also known as Mason Alan Dinehart III , Alan Dinehart III , or Mase Dinehart , is an American businessman and former actor best known for his role as a youthful Bat Masterson in thirty - four episodes between 1955 and 1959 of the ABC / Desilu television series The Life and Legend of Wyatt Earp , starring Hugh O'Brian in the title role of the frontier marshal Wyatt Earp . </P>
who played bat masterson in the movie tombstone
Mason Alan Dinehart