TORONTO -- A lack of discipline and special-teams struggles cost the Toronto Maple Leafs in pre-season action against the Buffalo Sabres.
The Leafs gave up three power-play goals and one short-handed in a 6-4 loss to the Sabres on Friday night at Air Canada Centre.
Buffalo scored on three of its four power plays after not scoring three power-play goals in any game last regular season.
Marcus Foligno, former Montreal Canadiens forward Brian Gionta and Mark Pysyk scored with the man advantage for the Sabres, who also got a short-handed goal from star centre Ryan O'Reilly.
Matt Frattin scored on the power play for the Leafs, who also got goals from Stuart Percy, Daniel Winnik and Nazem Kadri.
Goaltender Jonathan Bernier allowed five goals on 32 shots.
Nicolas Deslauriers also scored for Buffalo, and former Ottawa Senators forward David Legwand added an empty netter.
Robin Lehner, whom the Sabres acquired from the Senators at the draft, stopped 22 of the 25 shots he faced in two periods of work.
Notes: Winnik and Joffrey Lupul were the alternate captains for the Leafs. Coach Mike Babcock said he hadn't decided who would wear the ``As'' this season. ... The Leafs' game Saturday night against the Montreal Canadiens will feature three-on-three overtime regardless of the score. The NHL wants teams to practise the new overtime format before the regular season starts.