Charles J. "Iron Mike" Riordan (September 4, 1906 â February 14, 1989) was an American football fullback. He played college football for NYU and professional football in the National Football League (NFL) for the Staten Island Stapletons. He appeared in nine NFL games, six as a starter, during the 1929 season. He scored two touchdowns in a September 29 game against Millville.