In 1939, Beinor signed with the
St. Louis Gunners of the
American Football League. He appeared in four games for the Gunners during the 1939 season. In August 1940, Beinor was acquired by the
Chicago Cardinals in a trade with the Brooklyn Dodgers who owned his NFL rights. Chicago coach
Jimmy Conzelman traded for Beinor seeking linemen familiar with the Notre Dame system. He appeared in 11 games for the Cardinals in 1940, seven of them as a starter. He continued with the Cardinals at the start of the 1941 season, appearin in seven games, three as a starter. He appeared in four games for the Redskins in 1941 and returned to the club in 1942, appearing in 11 games, three as a starter. ==Military service==