Muzzin, 30, has collected 38 points in 82 games with the Maple Leafs, including 22 in 52 games this season, since being acquired in a trade with the Los Angeles Kings on January 28, 2019. In 578 career regular season NHL games, he has registered 251 points (61 goals, 190 assists) while adding 22 points in 57 playoff contests. He captured the 2014 Stanley Cup as a member of the Kings.
Internationally, Muzzin has represented Canada at both the 2015 World Championships and the 2016 World Cup of Hockey. He captured a gold medal at the 2015 World Championships and was a plus-14 in 10 games, which was the highest plus/minus at the tournament. At the 2016 World Cup of Hockey in Toronto, Muzzin skated in one game for Canada, capturing a gold medal.
Muzzin was originally selected by the Pittsburgh Penguins in the fifth round (141st overall) of the 2007 NHL Draft. He signed an entry-level contract with Los Angeles on January 4, 2010.