Jack Rule Jr.

Jack D. Rule Jr. (born November 13, 1938) is an American professional golfer. He played on the PGA Tour in the 1960s. Rule was born in Mason City, Iowa. He beat Jack Nicklaus in the 1956 U.S. Junior Amateur semi-finals.
Rule won twice on the PGA Tour, the 1963 St. Paul Open Invitational and the 1965 Oklahoma City Open Invitational.