The Utah Mammoth defeated the Tampa Bay Lightning 5-4 in overtime on October 24, 2026, at the Delta Center. Dmitri Simashev scored the winning goal during the overtime period to secure the victory for Utah.
The game opened with Jake Guentzel scoring unassisted for the Lightning at 05:10 of the first period. Kailer Yamamoto answered for the Mammoth at 07:02 with an unassisted goal. In the remainder of the first period, Pontus Holmberg, Brayden Point, and Dylan Guenther scored for the Lightning and Mammoth respectively, with Guenther's goal coming on a power play. Point's goal was assisted by Nikita Kucherov and Charle-Edouard D'Astous.
During the second period, Conor Geekie scored for the Lightning at 05:32, while Anders Lee and Dmitri Simashev scored for the Mammoth to give Utah the lead. Simashev's first goal was assisted by MacKenzie Weegar and Vincent Trocheck, and his second goal was assisted by Barrett Hayton and Karel Vejzelka. The period also saw a power play goal from Dylan Guenther, assisted by Mikhail Sergachev and Clayton Keller.
The overtime period featured a decisive goal by Dmitri Simashev at 01:44, assisted by Barrett Hayton and Karel Vejzelka. Throughout the game, the Utah Mammoth recorded 28 shots, while the Tampa Bay Lightning recorded 32 shots. Karel Vejzelka made 29 saves on 32 shots for the Mammoth, while Dennis Hildeby made 23 saves on 28 shots for the Lightning. A total of 14,111 fans attended the matchup.
The game was officiated by referees Gord Dwyer and Ben Betker, with Tyson Baker and Dan Kelly serving as linesmen. Penalties during the game included infractions by Jeffrey Viel, Jack McBain, Clayton Keller, Emil Lilleberg, Mikhail Sergachev, Nikita Kucherov, Charle-Edouard D'Astous, and Kevin Stenlund.