The Toronto Maple Leafs were hit hard by injuries Monday, losing three key players for Monday's clash versus the Calgary Flames and potentially beyond.
Defenseman Jake Muzzin is out due to a broken bone in his face, while forwards Zach Hyman and Joe Thornton are day-to-day with undisclosed ailments, head coach Sheldon Keefe confirmed to TSN's Kristen Shilton.
Muzzin's potential return date is unclear and he'll need to wear a full face shield when he's back on the ice, Keefe added.
The veteran blue-liner was hit by an errant stick in Saturday's win over the Montreal Canadiens. Muzzin has chipped in 12 points while averaging 21 minutes per night for Toronto this season.
Hyman has notched 10 points in 18 games. Thornton's contributed three goals and six assists in nine contests and returned last week from a rib injury that forced him to miss 10 games.
The Maple Leafs sit first in the NHL with a 14-3-2 record.