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Steven Lorentz scored the go-ahead goal in the second period and the Toronto Maple Leafs defeated the visiting New York Islanders 3-1 on Tuesday afternoon.

Auston Matthews took part in Maple Leafs practice for the first time since a Dec. 20 injury but won't play Tuesday against the Islanders.

Auston Matthews skated in a full practice with the Maple Leafs for the first time since re-aggravating an upper-body injury, but won’t play Tuesday against the New York Islanders at Scotiabank Arena.

Auston Matthews practiced Monday but will miss his fifth straight game when the Toronto Maple Leafs host the New York Islanders at Scotiabank Arena on Tuesday (1 p.m. ET; SNO, MSGSN). It was the center’s first time practicing since reaggravating an upper-body injury Dec.

Auston Matthews was a full participant at Monday’s practice for the first time since re-aggravating an upper-body injury against the Buffalo Sabres on Dec. 20, multiple reports said. Since then, Matthews has missed four games as the Leafs have gone 1-3 while allowing 21 goals and at least five per contest.