The 2019-20 NHL season begins Oct. 2. With training camps open, NHL.com is taking a look at the five keys, the inside scoop on roster questions, and the projected lines for each of the 31 teams. Today, the Toronto Maple Leafs.
Maple Leafs season preview: Marner, Matthews production critical
Each forward is entering first season of new contract; Nylander hoping for resurgence
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