Robert Allen Ryan (born December 13, 1962) is an American football coach in the National Football League (NFL). He has served as a defensive coordinator or coach for seven different NFL teams, and served as the linebackers coach for the New England Patriots when they won both Super Bowl XXXVI and Super Bowl XXXVIII. He is the son of former defensive coordinator and head coach Buddy Ryan and the twin brother of Rex Ryan.When his parents, Doris and Buddy Ryan, divorced in 1966, Rob and his fraternal twin, Rex, moved with Doris to Toronto. In 1974, they moved back to the United States to live with their father. He attended Stevenson High School in Lincolnshire, Illinois. Wikipedia
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