Matthews, named to Team USA for the Winter Olympics in Milano Cortina next month, topped Mats Sundin's mark in his 664th game.

The all-time leading goalscorers in the history of the NHL's Original Six franchises are all icons—Johnny Bucyk (Bruins), Rod Gilbert (Rangers), Gordie Howe (Red Wings), Bobby Hull (Blackhawks), and Rocket Richard (Canadiens).

Both his tallies have a place in Maple Leafs history as his first goal equalled Mats Sundin's 420 goals in the Blue and White. Later in the period, he fired home a one-timer to take sole possession of first place on the franchise's all-time goal list. All of his teammates cleared the bench to congratulate him on the milestone.

Auston Matthews is officially the top goalscorer in Toronto Maple Leafs history. Matthews scored his 421st career goal during Saturday's first period against the New York Islanders to pass Mats Sundin for the all-time franchise record. Matthews tied Sundin's record with his 420th goal earlier in the period.

Auston Matthews finally moved past Mats Sundin to become the Toronto Maple Leafs’ all-time goal scorer. This record of 421 goals feels far bigger than a stat line.

After a prolonged slump to start the season, Matthews looked more like his vintage self with a hat trick against the Jets.

Auston Matthews continues to lead the offense, supported by top scorers Jack Hughes, Jack Eichel, Kyle Connor, and the Tkachuk brothers. This forward group combines speed, scoring ability, and playoff experience,

The Toronto Maple Leafs have a new all-time goals leader, as Auston Matthews has surpassed Mats Sundin for the most goals in franchise history. Matthews achieved the feat during Saturday’s game against the New York Islanders,

None has scored more than Auston Matthews, who notched his 421st goal with the Maple Leafs on Saturday, passing longtime captain Mats Sundin for the most in franchise history. Matthews needed just 664 games to break the record.