Linus Ullmark made 27 saves for the first playoff shutout of his career as the Ottawa Senators edged the Toronto Maple Leafs 4-0 on Tuesday night to cut the deficit in the teams’ first-round series to 3-2.

Thomas Chabot and Dylan Cozens gave the visiting Senators a 2-0 lead before Tim Stutzle and Brady Tkachuk added empty-net goals for Ottawa, which once again staved off elimination after picking up a 4-3 overtime victory in Game 4 at home Saturday. Tkachuk and Stutzle added two assists each for three-point performances.

Anthony Stolarz stopped 15 shots for the Leafs.

Only four NHL teams have come back from a 3-0 deficit to win a series — the 1942 Leafs, 1975 Islanders, the 2010 Flyers and the 2014 Kings.

Game 6 is Thursday in Ottawa.

Toronto, which beat Ottawa four times in a five-playoff span in the early 2000s, dropped to 1-13 in potential series-clinching games in the Auston Matthews-Mitch Marner era dating back to the 2018 playoffs. That lone victory came in a first-round triumph over the Tampa Bay Lightning two years ago.

The Leafs took the opener of this series against their provincial rival 6-2 before back-to-back 3-2 overtime victories pushed them to a 3-0 lead. The Senators, meanwhile, picked up their first playoff victory since 2017 in Saturday’s extra-time decision that kept their season going.