DALLAS (AP) -- Dallas goaltender Kari Lehtonen made 22 saves in his 33rd career shutout, leading the Stars to a 3-0 win against St. Louis on Sunday, stretching their lead over the Blues atop the NHL Central Division to nine points.
The Stars immediately avenged the loss to the Blues the previous day and recorded a win that strengthened their grip on the division.
St. Louis did remain four points above defending champion Chicago, which was beaten at home by Carolina, while Toronto won to prevent the New York Islanders moving to second in the Metropolitan Division, and Ottawa beat Boston to leave the two teams level on points in the tightly contested Atlantic Division.
Dallas' Jamie Benn scored his NHL-leading 23rd goal, he and Patrick Sharp each had a power-play goal and an assist, and Cody Eakin scored into an empty net with 1:32 remaining.
Lehtonen improved his season record to 12-2-0.
Ottawa's Mark Stone scored twice to lead the Senators to a 3-1 home win against Boston.
That left the teams level on points, fourth and fifth respectively in the Atlantic, but only two points off the lead.
Craig Anderson stopped 38 shots while Mika Zibanejad had the other goal for the Senators.
David Krejci netted the sole goal for the Bruins.
Carolina held on against a Chicago team that dominated the third period, and edged the Blackhawks 2-1.
Justin Faulk and Victor Rask scored, while backup goalie Eddie Lack stopped 35 shots and came within three seconds of a shutout before Brent Seabrook scored for the hosts.
Lack wasn't consistently tested until the Blackhawks outshot Carolina 19-9 in the third period.
Toronto's Tyler Bozak and Michael Grabner scored 1:40 apart in the second period as the Maple Leafs beat the Islanders 3-1.
Jonathan Bernier stopped 25 shots and James van Riemsdyk added an empty net goal for the Maple Leafs, who have taken at least a point from seven of their past eight games.
Nikolay Kulemin scored for the Islanders, who missed a change to move above their city rivals, the Rangers.
Florida took over top spot in the Atlantic after defeating Columbus 3-2.
Aleksander Barkov had a pair of goals and Aaron Ekblad also scored for the Panthers.
Brandon Saad and Cam Atkinson netted for Columbus.
Arizona's Mikkel Boedker scored at 4:17 of overtime to give the Coytes a 2-1 win over Colorado.
Winnipeg goalie Connor Hellebuyck made 30 saves in his first career NHL shutout to help the Jets beat the Penguins 1-0.
Calgary extended its home winning streak to a franchise-record 11 games by beating Edmonton 5-3, with red-hot Johnny Gaudreau scoring twice.
Anaheim notched a fifth straight victory by downing Philadelphia 4-2.