Toronto Maple Leafs captain Auston Matthews formally returned to practice Friday, after working through a lower-body injury incurred during training camp.

Auston Matthews returned to practice with the Toronto Maple Leafs on Friday after missing a few days due to an upper-body injury.

Toronto Maple Leafs coach Craig Berube says he does not think Auston Matthews' upper-body injury is too serious.

Maple Leafs captain Auston Matthews will miss Thursday night's preseason game against the Canadiens with an upper-body injury.

Auston Matthews suffered an upper body injury in training camp, but Maple Leafs say it is not a serious problem

Fans in Toronto got nervous on Tuesday when Maple Leafs captain Auston Matthews left the ice midway through Tuesday’s practice and did not return. After the skate, head coach Craig Berube sort of dismissed any concern, saying: “Just an upper-body thing. It’s not serious. He should be fine.”

Matthews skated on a line with Mitch Marner and Steven Lorentz, who returned to the ice after missing the last few days with an upper-body injury. After Matthews departed Marner had to spot-fill for the rest of the session while defenseman William Villeneuve flipped to forward to join the line. The exact issue Matthews is dealing with is unknown.

Toronto Maple Leafs coach Craig Berube said he does not think Auston Matthews’ upper-body injury is too serious and expects the captain to be fine.