The pair was recalled on Saturday from the team’s AHL affiliate, the Toronto Marlies, following a conditioning stint.
Muzzin had been sidelined with a foot injury, while Moore was dealing with a shoulder injury.
Muzzin is second among Toronto skaters in average ice time this season (21:21 per game) behind only defenceman Morgan Rielly — who is out with a foot injury for at least a few more weeks — and has 13 points in 38 games this season. He hasn’t suited up for the Maple Leafs since Dec. 27.
The Leafs play the Nashville Predators on Monday.