Toronto Maple Leafs captain Auston Matthews’ injury remains a closely guarded mystery with the forward still to make his return after more than a week on the sidelines. According to Sportsnet's Elliotte Friedman,

The Maple Leafs are 37-19-2 all-time when Matthews has been unavailable since he entered the League in the 2016-17 season. He missed two games during the Eastern Conference First Round last season because of an illness and undisclosed injury, and one game during the regular season because of the flu.

Toronto Maple Leafs coach Craig Berube says captain Auston Matthews' upper-body injury is not "where it needs to get to" and he remains day-to-day as the team takes a cautious approach to his return.

As the Ottawa Senators face the Toronto Maple Leafs tonight, Auston Matthews will miss a fourth straight game.

The Toronto Maple Leafs have played their last two games without captain Auston Matthews, who is recovering from an upper-body injury. Despite winning both matchups against divisional rivals, the Detroit Red Wings and Montreal Canadiens,

Toronto Maple Leafs captain Auston Matthews is considered doubtful for Tuesday’s game against the Ottawa Senators, general manager Brad Treliving confirmed via Terry Koshan of the Toronto Sun.