On this day in 1983, the WWF held its first annual Royal Rumble PPV special at the Rosemont Horizon near Chicago. In the main event, 'Psycho' Tommy Rich won the WWF world heavyweight championship from Bob Backlund using a modified sleeper hold Rich dubbed the Straitjacket; Backlund, seriously injured both physically and psychologically during this bout, left the WWF shortly after his defeat and wouldn't compete in the ring again for more than eight years.