His official status is day to day after undergoing an MRI on the shoulder, which was injured late in Thursday's overtime win over the New York Islanders.
The Maple Leafs play three games in four days beginning Saturday against Boston, followed by back-to-back games Monday and Tuesday in Tampa Bay and Florida. Toronto then has a break leading into an outdoor game against Washington on March 3.
Matthews missed time earlier this season with concussion symptoms. In 53 games, he's recorded 28 goals and 22 assists.