Andrei Loktionov scored 59 seconds into overtime to give Windsor a 5-4 victory over the London Knights on Monday and the Spitfires a 3-1 lead in their Ontario Hockey League Western Conference final.
Lane MacDermid, Greg Nemisz, Eric Wellwood and Dale Mitchell, with two assists, scored in regulation for Windsor, which entered the third period up 4-1.
John Carlson scored twice in the third to rally the Knights, including the tying goal at 15:55 - his seventh of the post-season. Michael Del Zotto also scored in third while Justin Taylor scored his sixth playoff goal in the first period for London.
The status of Loktionov, the OHL's leading rookie scorer in the playoffs, was questionable before the game after taking an apparent knee-on-knee hit in Game 3. Loktionov had to be helped off the ice with three minutes remaining in regulation and did not return for overtime.