Captain Gabriel Landeskog scored 2:32 into overtime after Colorado squandered a late lead in regulation and the Avalanche beat the San Jose Sharks 4-3 on Monday night to force a decisive Game 7 in their Western Conference semifinal series.

Landeskog dumped the puck into the zone, turned in a big hit along the boards, got up in time to take a pass from rookie Cale Makar and knock in the goal past Martin Jones to help the Avalanche escape elimination. J.T. Compher had two goals and an assist, while Tyson Jost added another.

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Colorado Avalanche center Tyson Jost, center, is congratulated after scoring a goal by defenseman Ian Cole, left, and left wing J.T. Compher in the second period of Game 6 of an NHL hockey second-round playoff series against the San Jose Sharks, Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

Captain Gabriel Landeskog scored 2:32 into overtime after Colorado squandered a late lead in regulation and the Avalanche beat the San Jose Sharks 4-3 on Monday night to force a decisive Game 7 in their Western Conference semifinal series.

San Jose Sharks defenseman Brent Burns, right, knocks the puck away from Colorado Avalanche defenseman Tyson Barrie in the first period of Game 6 of an NHL hockey second-round playoff series Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

The Stars and Blues are tied heading into Game 7 in St. Louis on Tuesday. The Sharks are 7-4 all-time in Game 7s, including a win over Vegas in the first round, while the Avalanche have a 4-6 mark since relocating to the Mile High City.

Colorado Avalanche goaltender Philipp Grubauer deflects the puck in the first period of Game 6 of an NHL hockey second-round playoff series against the San Jose Sharks, Monday, May 6, 2019, in Denver. (AP PhotoDavid Zalubowski)

This has been a back-and-forth series. San Jose captured Game 1 and the two have alternated wins the rest of the way. The combined score in the series is 17-16 in favor of the Sharks.

Colorado Avalanche center Tyson Jost, front, tries to redirect the puck toward San Jose Sharks goaltender Martin Jones in the first period of Game 6 of an NHL hockey second-round playoff series Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

The last time Colorado won Game 6 when facing a 3-2 deficit was the 2002 conference semifinals, which also happened to be against San Jose. The Avalanche then knocked off the Sharks 1-0 in Game 7.

San Jose Sharks goaltender Martin Jones deflects a shot in the first period of Game 6 of an NHL hockey second-round playoff series against the Colorado Avalanche, Monday, May 6, 2019, in Denver. (AP PhotoDavid Zalubowski)

It was a painful second period for Mikko Rantanen, who took a hip check from Burns in the right hip/thigh area. Rantanen immediately went to the bench and into the locker room. Rantanen gingerly returned about 4 minutes later.

Game 7 is Wednesday in San Jose. The winner will play either Dallas or St. Louis in the conference final.

Colorado Avalanche center Tyson Jost, center, is congratulated after scoring a goal by defenseman Ian Cole, left, and left wing J.T. Compher in the second period of Game 6 of an NHL hockey second-round playoff series against the San Jose Sharks, Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

Colorado Avalanche center Tyson Jost, center, is congratulated after scoring a goal by defenseman Ian Cole, left, and left wing J.T. Compher in the second period of Game 6 of an NHL hockey second-round playoff series against the San Jose Sharks, Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

The Stars and Blues are tied heading into Game 7 in St. Louis on Tuesday. The Sharks are 7-4 all-time in Game 7s, including a win over Vegas in the first round, while the Avalanche have a 4-6 mark since relocating to the Mile High City.

Philipp Grubauer made 19 saves, including a pad save on Tomas Hertl early in OT.

Marc-Edouard Vlasic scored twice, including the tying goal off the skate of an Avalanche defenseman with 2:28 remaining, and Brent Burns added another for the Sharks, who fell to 22-19 when opponents are facing elimination.

San Jose Sharks defenseman Brent Burns, right, knocks the puck away from Colorado Avalanche defenseman Tyson Barrie in the first period of Game 6 of an NHL hockey second-round playoff series Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

San Jose Sharks defenseman Brent Burns, right, knocks the puck away from Colorado Avalanche defenseman Tyson Barrie in the first period of Game 6 of an NHL hockey second-round playoff series Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

This has been a back-and-forth series. San Jose captured Game 1 and the two have alternated wins the rest of the way. The combined score in the series is 17-16 in favor of the Sharks.

Colorado has been playing desperate hockey since late in the regular season just trying to sneak into the playoffs. The team went 8-0-2 down the stretch to secure the eighth seed. The Avs haven't lost back-to-back games since mid-March.

"Every game was kind of an elimination game for us, so to speak," defenseman Erik Johnson said. "We didn't have a choice."

Colorado Avalanche goaltender Philipp Grubauer deflects the puck in the first period of Game 6 of an NHL hockey second-round playoff series against the San Jose Sharks, Monday, May 6, 2019, in Denver. (AP PhotoDavid Zalubowski)

Colorado Avalanche goaltender Philipp Grubauer deflects the puck in the first period of Game 6 of an NHL hockey second-round playoff series against the San Jose Sharks, Monday, May 6, 2019, in Denver. (AP PhotoDavid Zalubowski)

The last time Colorado won Game 6 when facing a 3-2 deficit was the 2002 conference semifinals, which also happened to be against San Jose. The Avalanche then knocked off the Sharks 1-0 in Game 7.

Nathan MacKinnon nearly gave Colorado a 4-2 advantage late in the game, but his attempt was deflected away by the stick of Burns. Soon after, Vlasic tied it up when he banked a shot off the right skate of Colorado defenseman Nikita Zadorov. It all was set up when Zadorov broke his stick on the play and Landeskog handed him his.

Colorado took a one-goal lead on two separate occasions in the second period, only to have the Sharks tie it right back up. After Jost scored, Vlasic answered. And after Compher's goal from the blue line, Burns responded with 9.8 seconds left.

Colorado Avalanche center Tyson Jost, front, tries to redirect the puck toward San Jose Sharks goaltender Martin Jones in the first period of Game 6 of an NHL hockey second-round playoff series Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

Colorado Avalanche center Tyson Jost, front, tries to redirect the puck toward San Jose Sharks goaltender Martin Jones in the first period of Game 6 of an NHL hockey second-round playoff series Monday, May 6, 2019, in Denver. (AP PhotoJack Dempsey)

It was a painful second period for Mikko Rantanen, who took a hip check from Burns in the right hip/thigh area. Rantanen immediately went to the bench and into the locker room. Rantanen gingerly returned about 4 minutes later.

Colorado hit two posts in a scoreless first period. Jones has surrendered just one goal to Colorado in the opening period all series.

Sharks captain Joe Pavelski made another step toward a return as he went through drills Monday morning at Pepsi Center. He's been out since his head slammed against the ice in Game 7 of a first-round series against Vegas.

San Jose Sharks goaltender Martin Jones deflects a shot in the first period of Game 6 of an NHL hockey second-round playoff series against the Colorado Avalanche, Monday, May 6, 2019, in Denver. (AP PhotoDavid Zalubowski)

San Jose Sharks goaltender Martin Jones deflects a shot in the first period of Game 6 of an NHL hockey second-round playoff series against the Colorado Avalanche, Monday, May 6, 2019, in Denver. (AP PhotoDavid Zalubowski)

"It still really is day-to-day," Pavelski said. "Wish I had a set-in-stone answer — go here, do this and be ready. We're taking everything into play."

NOTES: Sharks D Erik Karlsson had his 12th assist of the 2019 postseason. ... Avalanche F Matt Calvert missed a second straight game with an upper body injury. ... Colorado went with 11 forwards and seven defensemen.

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