Cannon injured his back in the third game of the 1962 season, which affected his performances, but he still finished second on the team in scoring behind Blanda. The Oilers reached the championship game for a third time, but lost to the Dallas Texans in the first ever double-overtime game in professional football history. New leg injuries and lingering back problems caused Cannon to miss most of the 1963 season. The Oilers also replaced Lemm as head coach. Because of this and his injury problems, Cannon successfully requested that the team let him leave. He later recalled: "I left the team with good feelings and a lot of good friends. It was just time to go."