Pittsburgh Pirates left-handed first baseman Dale Long makes his first appearance as a catcher in an exhibition game against the minor league San Diego Padres.
On March 21, 1951 — Pittsburgh Pirates left-handed first baseman Dale Long makes his first appearance as a catcher in an exhibition game against the minor league San Diego Padres.
Sources –
Baseball Reference March 21
SABR Games Project
National Pastime March 21
Retro Sheet
Replay The Game