WWF One Night Only was a professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF, now WWE), and aired exclusively in Canada, and the United Kingdom. It took place on September 20, 1997, at the NEC Arena in Birmingham, England. The event featured eight matches, with two main events. In the first main event, The Undertaker challenged Bret Hart for the WWF Championship, where Hart retained. In the second main event match, which closed the show, Shawn Michaels defeated The British Bulldog to win the WWF European Championship.