Roy Mack

Roy Francis McGillicuddy (August 27, 1888 – February 11, 1960), known as Roy Mack, was an American baseball team executive owner who co-owned the Philadelphia Athletics of the American League with his father Connie Mack and brother Earle Mack from through .

Early life Mack was born in Washington, D.C. in 1888, the son of Hall of Fame manager and Athletics co-founder Connie Mack and Gertrude Browning Chaffee. His paternal grandparents, Michael McGillicuddy and Mary McKillop, were born in Ireland. He grew up in Worcester, Massachusetts, where he attended Worcester Academy.

Career Roy Mack's baseball career was focused on front office administration and management. He served as business manager of the Baltimore Orioles of the International League from 1919 to 1924, the Portland Beavers of the Pacific Coast League, an A's minor-league affiliate, from 1924 to 1936. In 1936, he joined the Philadelphia front office in 1936 as a vice president.

Co-ownership of A's Connie Mack acquired controlling interest in the A's in 1937, and soon afterward transferred 489 of his 891 shares in the team to Roy, Earle and their half-brother Connie Jr.; the three sons each received 163 shares. Connie Sr. intended to have his three sons inherit the team once he died or retired, with Roy and Connie Jr. running the business side. However, Roy and Earle spent the better part of the 1940s in a dispute with Connie Jr. over the direction of the club. Connie Jr., some 20 years younger than his half brothers, had increasingly chafed at the family's bargain-basement approach to running the team, but Roy and Earle believed their half-brother's ideas were too expensive. Connie Jr. was able to push through some of his ideas by forming an alliance with the heirs of Athletics co-founder Benjamin Shibe. One of the few things on which the two factions agreed was to persuade Connie Sr. to retire as manager after the 1950 season.