Mason Alan Dinehart played Masterson from 1955 to 1959 in 34 episodes of the ABC Western series starring Hugh O'Brian in the title role .
The ABC Western series is the Life and Legend of Wyatt Earp .
Mason Alan Dinehart played Masterson from 1955 to 1959 in 34 episodes of the ABC Western series , The Life and Legend of Wyatt Earp , starring Hugh O'Brian in the title role .