Without any major offseason additions, Maple Leafs are relying on a rebound from Rielly to boost their defense.
Think of the best NHL teams from the last couple decades, especially Stanley Cup winners. Count how many of them didn't have a star defenseman or two.
If the Toronto Maple Leafs hope to contend for a Stanley Cup this season, they need Morgan Rielly to make his best possible impression of an elite defenseman.
Considering how quiet they were in free agency and on the trade market, it's a big and dangerous bet.