Defenseman Fredrik Claesson scored his first NHL goal and added an assist to help the Ottawa Senators win their fourth straight game, 5-2, over the Stars on Wednesday night in Dallas.

Ottawa moved within 4 points of first-place Montreal in the Atlantic Division. The Senators’ winning streak began after they acquired Viktor Stalberg and Alexandre Burrows near the trade deadline.

Craig Anderson made 35 saves and tied the Ottawa franchise record with his 146th victory.

Stalberg and Cody Cedi also each had a goal and an assist for the Senators, and Mike Hoffman had two assists.

Chris Wideman and Jean-Gabriel Pageau also scored against Dallas starting goalie Kari Lehtonen, who left at 3:21 of the second period after allowing three goals in 18 shots.

Antti Niemi replaced Lehtonen. Ottawa didn’t have a shot on goal against Niemi for 14:48, until Stalberg scored on the power play for a 4-1 lead. Tyler Seguin and Jason Spezza scored for Dallas.

Penguins 7, Jets 4 — Former BU star Nick Bonino had a hat trick, Evgeni Malkin scored twice, and added an assist and Pittsburgh beat host Winnipeg for its third straight victory.

Justin Schultz and Jake Guentzel also scored, and Matt Murray made 31 saves for the defending Stanley Cup champion Penguins in the start of a five-game trip. Chad Ruhwedel had three assists, and Mark Streit and Conor Sheary each two.

Three of Pittsburgh’s goals came in a 57-second span in the second period, including two on the power play.

Connor Hellebuyck, making his 12th straight start, was pulled midway through the second period after allowing five goals on 15 shots for the Jets. He was replaced by Michael Hutchinson.

Shawn Matthais, Nikolaj Ehlers, Dustin Byfuglien, and Marko Dano scored for Winnipeg.