PITTSBURGH -- William Nylander scored 1:00 into overtime, and the Toronto Maple Leafs rallied twice to extend their winning streak to five games with a 6-5 victory against the Pittsburgh Penguins at PPG Paints Arena on Sunday.

William Nylander scored 1:00 into overtime, and the Toronto Maple Leafs beat Sidney Crosby and the Pittsburgh Penguins 6-5 on Sunday. Nylander, Auston Matthews and Matthew Knies each had a goal and an assist as Toronto earned its fifth consecutive win.

William Nylander's goal a minute into overtime gave the Toronto Maple Leafs a 6-5 win over the host Pittsburgh Penguins on Sunday afternoon.

Just 10 minutes in, the Maple Leafs were up 2-0 with a 13-3 shot advantage, dominating a tired Penguins team playing an early game on the second leg of a back-to-back. Less than five minutes later, Toronto was down 3-2, and the team ended the first period with a 17-13 shot deficit.

Toronto, Ontario, CAN; Toronto Maple Leafs forward William Nylander (88) speaks to an opposing player as he prepares to take a faceoff against the Washington Capitals in the third period at Scotiabank Arena.

William Nylander scored 1:00 into overtime, and the Toronto Maple Leafs beat Sidney Crosby and the Pittsburgh Penguins 6-5 on Sunday.

William Nylander scores a goal that was upheld after an official review in the second period vs. the Rangers.