WINDSOR, Ont. -- Bo Horvat scored in the third period to lift London to a four-game sweep over the Spitfires.

Gemel Smith, Max Domi and Brady Austin also scored for the Knights, and Jake Patterson made 34 saves in the 4-3 win.

Ben Johnson and Sam Povorozniouk had a goal and an assist apiece for Windsor, and Ryan Foss scored in a last-ditch effort at 19:22 of the third to cut London's lead to a single goal.

Spitfires goalie Alex Fotinos stopped 31 shots in the loss.