DALLAS — Wyatt Johnston’s fourth career hat track included two power-play goals, giving him an NHL-best 12, and Jason Robertson had the winning goal and two assists in his 400th career NHL game as the Dallas Stars beat the Ottawa Senators 6-1 on Sunday night.

Johnston also had an assist to match a season high with four points.

Mavrik Bourque and Jamie Benn also scored for the Stars, who have won four consecutive games and are 10-1-1 in their last 12 games.

Dallas backup goaltender Casey DeSmith is 6-0-2 after making 15 saves. Dallas allowed a season-low 16 shots on goal.

Robertson’s goal came 44 seconds after Jake Sanderson tied the score 1-1. Dallas outscored Ottawa 3-1 in the second period following a scoreless first.

Johnston and Robertson share the team lead with 16 goals each, ti

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