Question: The actress Patricia Blair played the character Lou Mallory in 22 epsiodes of the western "The Rifleman", which aired on ABC.  On this show, she appeared alongside the actor and professional basketball player who had 4.6 points per game during the Boston Celtics' 1946-47 season.  This athlete and actor played which part on "The Rifleman" during his stint on the series in the five years from 1958 to 1963?
answer: Lucas McCain