Kristers Gudlevskis made 36 saves to win his NHL debut, while Eric Brewer scored two goals as Tampa Bay beat Columbus 3-2.
Ondrej Palat also scored for the Lightning, who took a one-point lead over Montreal for second place in the Atlantic Division. A runner-up finish would give Tampa Bay home-ice advantage in their first-round playoff series with the Canadiens.
Boone Jenner and David Savard had goals for Columbus. The playoff-bound Blue Jackets are tied with Philadelphia — who have one game at hand — for third place in the Metropolitan Division.
STARS 3, BLUES 0
In Dallas, Trevor Daley had a goal and an assist, while Kari Lehtonen recorded his fifth shutout of the season as Dallas clinched their first playoff berth since 2008 with a victory against St Louis.
The Stars missed the post-season a franchise-record five straight seasons after never going more than one without a playoff trip since moving to Dallas in 1993.
St Louis, outshot 40-22, dropped their fifth straight game for the first time since February last year. The playoff-bound Blues also jeopardized their shot at the top seed in the Western Conference.
Dallas’ victory eliminated Phoenix in the race for the West’s final playoff spot.
ISLANDERS 3, DEVILS 2, SO
In Newark, New Jersey, Frans Nielsen, Josh Bailey and Ryan Strome scored in the shootout, and the New York Islanders beat New Jersey in what might have been Devils goaltender Martin Brodeur’s final start.
In other NHL action, it was:
‧ Sharks 5, Avalanche 1
‧ Hurricanes 2, Red Wings 1
‧ Capitals 4, Blackhawks 0
‧ Jets 5, Flames 3