[3] He attended Thornton Township High School where he played football and baseball and competed in swimming and track meets.
As a senior, he starred for the 1938 Notre Dame team that compiled an 8–1 record and was selected as national champion by the Dickinson System.
[7][8] 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.
[4] After his discharge from the Marines, Beinor worked for the Catholic Welfare Bureau as director of the boys program in Santa Barbara, California.
[16][17] In 1947, he was hired as the head football, basketball and track coach at St. Mary's High School in Phoenix, Arizona.
[16] After two years at St. Mary's, Beinor left the school to join his father's business in managing a supermarket in Kankakee, Illinois.