Leafs don't wanna rush Tavares in the lineup, so he is out until game 1 of the playoffs
Justin Holl accidentally cuts his hair and it takes him a full year to grow it back, so he is out until game 1 of the playoffs
Morgan Rielly spills coffee on his regular-season game jersey, so he is out until game 1 of the playoffs (when the leafs get their playoff jerseys).
Pierre Engvall accidentally locks himself in a giraffe pen at a zoo in Mexico, and the leafs couldn't get there to save him until game 1 of the playoffs, which is when Engvall will return.
Just before the trade deadline, Mitch Marner accidentally rips a hole in his glove, and is out until game 1 of the playoffs because that's when his playoff gloves arrive, which opens up more cap room to make big moves at the deadline
Playoff lineup
Landeskog-Matthews-Marner
Killorn-Tavares-Nylander
McGinn-Danault-Mikheyev
Burakovsky-Cizikas-Smith
Rielly-Letang
Muzzin-Brodie
Martinez-Larsson
Campbell
Raanta
(Playoff lineup is $30M over the cap)