The Toronto Maple Leafs stayed alive with a 2-0 win over the Florida Panthers in Game 6 on Friday night, but the status of forward Matthew Knies remains uncertain heading into the decisive Game 7. Knies took a reverse hit from Panthers defenseman Niko Mikkola late in the first period and appeared in discomfort afterward.

Losing Knies would be a significant blow for the Maple Leafs at the worst time. The 22-year-old winger has locked in a role on Toronto’s top line and top powerplay unit over the year’s second half. He’s tied for second on the team with five goals and ranks third among Leafs forwards in average ice time in 12 games this postseason.

The Toronto Maple Leafs could be without one of their most impactful players for Game 7 versus the Florida Panthers on Sunday.