The Toronto Maple Leafs head coach Sheldon Keefe released an injury update on Mitch Marner: he was placed on the Injury Reserve, as he's dealing with a lower-body injury.
Per Elliotte Friedman:
"Mitch Marner won't play vs Montreal due to a lower-body injury Sheldon Keefe labels day-to-day. May be from a spill late-2nd vs BOS on Thursday"
"It appears as though Mitch Marner is absent. He took that nasty fall against the Bruins on Thursday. "
In 62 games this season, Marner scored 76 points, including 25 goals.