A lucky goal by Auston Matthews early in the third period held up as the game-winner as the Toronto Maple Leafs defeated host Calgary 3-2 on Sunday afternoon.

Jack Campbell made 31 saves for the visitors, a handful in the final moments in discomfort while the Flames pushed for the equalizer that never came.

With the Leafs holding a 2-1 lead, Matthews -- who returned to the lineup after missing the previous game due to an undisclosed injury -- scored the winner at 2:42 of the final frame. Morgan Rielly sent a shot on goal that ticked off Matthews and then banked in off the leg of Flames defenseman Rasmus Andersson.

Rielly collected three assists in a game his team never trailed.

Toronto's Jake Muzzin opened the scoring with the lone goal of an even first period. Muzzin's point shot ricocheted off Flames forward Dominik Simon and into the net behind Jacob Markstrom for his first goal of the season at the 7:46 mark.

Mitch Marner's assist on the goal gave him 300 career points. Coming in his 307th game, he is the third fastest in franchise history to hit 300.

The Flames drew even when Sean Monahan buried his second goal of the season past the midway point of the second period. The hosts were buzzing around the net, and Monahan buried a sharp-angled offering that banked off Campbell and into the net at the 12:53 mark.

Wayne Simmonds' power-play goal restored the Toronto lead with 31.6 seconds remaining in the second -- yet another goal that didn't beat Markstrom cleanly. Simmonds meant to send the puck to the slot, but it banked off his own skate and into the net for his first goal of the season, 100th power-play goal and 500th career point.

While it was 3-1, the Flames got a much-needed jolt of life to make it a one-goal game. Elias Lindholm ripped a shot from the right face-off dot, and Matthew Tkachuk redirected it in with 13:27 remaining, but the comeback effort fell short.

Lindholm, Monahan, Johnny Gaudreau and Andersson have collected at least one point in all four games this season.

Markstrom stopped 29 shots for the Flames, who were without forward Dillon Dube, who was injured in last Monday's win over the Vancouver Canucks.

--Field Level Media