Toronto Maple Leafs forward Auston Matthews will not play for the United States at the upcoming World Championship, he confirmed at the team's locker clean-out Friday, according to The Athletic's James Mirtle.

The 20-year-old revealed his decision to skip the tournament is due to not being 100 percent healthy, though he assured he's not suffering from any major injuries.

Matthews was sidelined for 20 games this season after missing time in December with an upper-body injury and sitting from Feb. 23 to Mar. 21 due to a separate shoulder ailment.

He underwhelmed offensively in the postseason, contributing just one goal and one assist in the Maple Leafs' seven-game series defeat against the Boston Bruins.