Colorado's Nathan MacKinnon, Cale Makar and Ross Colton each had a goal and an assist. Tomas Tatar and Ben Meyers also scored, and backup goalie Ivan Prosvetov turned away all 11 shots he faced in relief of Alexandar Georgiev, who stopped 17 of 22 shots.
Nazem Kadri and Blake Coleman had a goal and an assist apiece, Andrew Mangiapane, Connor Zary and Yegor Sharangovich also scored and Dan Vladar made 31 saves for Calgary.
Colorado trailed 5-3 entering the third period but stormed back. Colton made it 5-4 at 11:20, his eighth goal of the season, and Rantanen's 13th of the campaign tied it at 13:31.
MacKinnon capped the rally with a breakaway goal at 15:30, his 12th goal of the season.
Islanders 4, Maple Leafs 3 (OT)
Bo Horvat scored 46 seconds into overtime for New York, which beat Toronto in Elmont, N.Y.
Horvat's game-winner came just after John Tavares, who played his first nine seasons with the Islanders, collected his 1,000th career point by assisting on Morgan Rielly's goal with 6.4 seconds left in regulation.
Brock Nelson and Casey Cizikas scored in the first and Kyle Palmieri scored in the second for the Islanders, who got 37 saves from Ilya Sorokin. Auston Matthews scored for the Maple Leafs. Toronto goalie Ilya Samsonov recorded 25 saves.
Sabres 5, Coyotes 2
Eric Robinson and Kyle Okposo each had a goal and two assists as Buffalo beat visiting Arizona to improve to 2-0-1 over its past three games.
Sabers goalie Devon Levi stopped 21 of 23 shots. Buffalo's Rasmus Dahlin had a goal and an assist, and Connor Clifton had two assists. Peyton Krebs and JJ Peterka scored Buffalo's other goals.
Michael Kesselring and Michael Carcone scored for the Coyotes, who are on a three-game losing streak. Arizona goalie Karel Vejmelka made 33 saves.
Stars 6, Red Wings 3
Miro Heiskanen had two goals and an assist for Dallas in a win against visiting Detroit.
Jason Robertson and Esa Lindell each had a goal and an assist, Roope Hintz and Sam Steel each had two assists and Jake Oettinger made 27 saves for the Stars, who had lost three of four games.
Daniel Sprong, Jonatan Berggren and Joe Veleno scored, Shayne Gostisbehere had two assists and James Reimer made 29 saves for the Red Wings, who were without four forwards because of injuries and a suspension to David Perron.
