Defenseman Alec Martinez had a goal and an assist in his Vegas debut and Mark Stone and Max Pacioretty also had a goal and an assist as the Golden Knights snapped Tampa Bay's franchise-record 11-game winning streak with a 5-3 victory on Thursday night in Las Vegas.
Paul Stastny and Ryan Reaves also scored goals for Vegas, which won its fourth straight game and moved into sole possession of first place in the Pacific Division. Marc-Andre Fleury stopped 24 shots.
Steven Stamkos scored two goals and Kevin Shattenkirk also scored for Tampa Bay, which lost for the first time since a 3-2 overtime loss at Dallas on Jan. 27.
Goaltender Andrei Vasilevskiy, who had a 21-game (19-0-2) point streak snapped, finished with 28 saves, suffering his first regulation loss since a 5-2 setback to Washington on Dec. 14.
Tampa Bay took a 1-0 lead at the 7:02 mark when Shattenkirk's spinning backhand shot from the bottom of the right circle caromed into the net off the skate of Vegas defenseman Nick Holden for his eighth goal of the season.
Vegas tied it near the end of the period when Martinez, obtained in a trade with the Los Angeles Kings on Wednesday, slapped in a rebound of a Cody Eakin shot from the bottom of the left circle for his second goal of the season.
The Golden Knights then took a 2-1 lead early in the second period when Stastny deflected a Reilly Smith pass into the slot past Vasilevskiy for his 17th goal of the season and the 250th of his career.
The Lightning tied it on a power-play goal by Stamkos, who one-timed a pass from Victor Hedman from the left circle that deflected off the stick of Holden and under the crossbar.
But Vegas regained the lead just 61 seconds later on Stone's 21st goal of the season on a backhand at the end of a two-on-one rush with Pacioretty.
The Golden Knights then broke the game open with two goals in the first 47 seconds of the third period to increase their lead to 5-2. Reaves got the first one just 10 seconds into the period when he stole the puck from defenseman Braydon Coburn at the Tampa Bay blue line and then muscled a shot past Vasilevskiy for his seventh goal of the season. Pacioretty followed 37 seconds with a power play goal, his 28th of the season.
Stamkos ended the scoring with two minutes left when he scored his 29th goal of the season on a six-on-four power play after the Lightning pulled Vasilevskiy.
--Field Level Media