​Recaps of Sunday’s game, the Leafs remember the late George Armstrong and more in today’s NHL morning coffee headlines.

NHL.COM: Morgan Rielly collected three assists and Auston Matthews netted the game-winner as the Toronto Maple Leafs held on for a 3-2 victory over the Calgary Flames. Before the game, the Leafs mourned former captain George Armstrong, who passed away yesterday at age 90.

Hall-of-Famer George Armstrong passed away Sunday at age 90. (NHL.com)

SPECTOR’S NOTE: Armstrong spent his entire 21-NHL career with the Leafs, 12 of those as captain. He led the Leafs to four Stanley Cups in the 1960s, finishing his career with 296 goals and 713 points in 1,188 games. Armstrong was inducted into the Hockey Hall of Fame in 1975 and went on to work for the Leafs in various front-office roles and was a long-time scout and team ambassador. My condolences to Armstrong’s family, friends, former teammates, and the Leafs organization.

The Chicago Blackhawks picked up their second win of the season by thumping the Detroit Red Wings 6-2. Blackhawks rookie Pius Suter tallied a hat track, becoming the second player in franchise history to score his first three NHL goals in one game.

SPECTOR’S NOTE: It was a well-deserved victory by the Blackhawks. The Red Wings certainly didn’t help their cause, looking every bit as horrible as they did last season.

Jack Eichel’s shootout goal lifted the Buffalo Sabres to a 4-3 decision over the Washington Capitals. Sabres defensemen Colin Miller and Rasmus Ristolainen each had two points, as did Capitals center Nicklas Backstrom and blueliner Justin Schultz.

A controversial goal by William Karlsson late in the third period lifted the Vegas Golden Knights over the Arizona Coyotes 1-0. Vegas goaltender Marc-Andre Fleury made 16 saves for his 62nd career shutout, moving into 17th place on the all-time list.

SPECTOR’S NOTE: Coyotes coach Rick Tocchet wasn’t pleased by Karlsson’s goal, believing play should’ve been whistled down for icing.

The New Jersey Devils got goals from Jack Hughes and Pavel Zacha to blank the New York Islanders 2-0. Scott Wedgewood kicked out 28 shots for the shutout. Devils blueliner Ty Smith became the sixth rookie defenseman in NHL history to collect points in his first five games.

Jake Guentzel tallied his 100th career NHL goal, breaking a 2-2 tie as the Pittsburgh Penguins nipped the New York Rangers 3-2. Penguins captain Sidney Crosby picked up two assists. Rangers center Filip Chytil left the game with an upper-body injury following a second-period collision with Penguins forward Evan Rodrigues.

The Anaheim Ducks defeated the Colorado Avalanche 3-1 thanks to a 32-save performance by goaltender John Gibson.

Los Angeles Kings captain Anze Kopitar had a goal and two assists to lead his club over the St. Louis Blues 6-3. Brayden Schenn scored twice for the Blues.

Brent Burns’ goal late in the third period was the game-winner as the San Jose Sharks beat the Minnesota Wild 5-3. Sharks forward Ryan Donato had a goal and an assist, as did Wild winger Zach Parise.

The Dallas Stars tallied three power-play goals to hold off the Nashville Predators 3-2. Stars forwards Joe Pavelski and Roope Hintz each tallied a goal and two assists. The Stars were playing without captain Jamie Benn, who’s been sidelined with a lower-body injury since Friday’s season-opener.

Leon Draisaitl scored with one second remaining in the game to give the Edmonton Oilers a 4-3 win over the Winnipeg Jets. Oilers captain Connor McDavid collected three assists in this contest.

THE PROVINCE: Vancouver Canucks center Elias Pettersson has changed agents, moving to Pat Brisson at CAA Hockey. Brisson also represents Canucks defenseman Quinn Hughes.

SPECTOR’S NOTE: Brisson is among the NHL’s most powerful agents. Pettersson and Hughes are in the final seasons of their entry-level contracts. Both will be seeking significant raises this summer.

TSN: The Columbus Blue Jackets placed center Brandon Dubinsky on long-term injury reserve. He’s been sidelined since the 2019 playoffs with a chronic wrist injury.

SPECTOR’S NOTE: Dubinsky’s playing career is likely over. He’s in the final season of his contract and becomes an unrestricted free agent this summer.