The Maple Leafs' biggest mistake this offseason was letting Pontus Holmberg leave and join a divisional rival.
The Toronto Maple Leafs had a busy offseason with the departure of a superstar and depth forwards. The Maple Leafs had a lot of decisions to make. They attempted to bring in a plethora of depth forwards; some have worked out, while others may not. However, the Maple Leafs made one mistake, and that was not re-signing a player who left for a divisional rival.