Star center Nathan MacKinnon left for the locker room after appearing to suffer a right arm injury.
It appeared MacKinnon was unable to hold up his right arm as he skated off the ice and to the locker room.
MacKinnon has been a star this postseason, just like he was all year.
He has six goals and seven assists (13 points) in 11 games for Colorado.
He tallied his second straight 97-plus point season this year, finishing with 99 (41 goals, 58 assists) in 2018-19.
The Avalanche tied up the series in Game 6 and will look to head on to the Western Conference finals with a win over San Jose.
Update: MacKinnon returned to the game a few minutes later and nearly scored on his first shift on the ice.
However, it came after the Sharks scored two goals in his absence to take a 2-0 lead.
The Sharks won the game 3-2. MacKinnon spoke about his injury after the game.
“I have a grade 2 or 3 AC sprain and I got shot up after, or mid-first, I guess, and they checked to see if I cracked my collarbone and it wasn’t cracked so I was good. Just got a shot and went back out,” MacKinnon said, via CBS Denver.
“I didn’t really feel it after that. After the second it started wearing off a little bit, but you know, I’ve done that a few times so I knew exactly what happened right when I got hurt. I did it last year, I’ve done it growing up, in Junior I did it so I knew it happened. It sucks that I even got hurt. It’s been a long time, a year and a half, and it happened in Game 7 of the second round so I was pretty pissed.”