Article at a glance:

• Arizona Coyotes: The Coyotes have named Mario Duhamel as their assistant coach.
• Aaron Portzline: Columbus Blue Jackets assistant coach Sylvain Lefebrve refused to get his COVID vaccine and resigned.
• The Blue Jackets named Steve McCarthy as an assistant coach.
• Adam Kimelman of NHL.com: Anaheim Ducks forward Ryan Kesler realizes that after his left hip surgery last February, his NHL days are over