Ahead of their morning skate, the Leafs announced that Matthews will not play tonight and is listed as day-to-day with an upper-body injury. It's unclear as to when or where the injury occurred, but if it has been lingering, that could also be playing into his much lower scoring pace to begin the season.
With the Leafs playing three games in five nights this week, the two days off before Friday's game against the Detroit Red Wings may mean that it is just a one-game absence for Matthews. This will mark the fourth game in the calendar year that the Scottsdale, Arizona native has missed against the Bruins, with three of them coming during their first-round playoff series when he suffered from an illness that was never clarified.