The Utah Mammoth have made it clear that their trade for Sebastian Cossa was about more than adding organizational depth.
Just days after acquiring the former first-round pick from the Detroit Red Wings in exchange for the 23rd overall selection in the 2026 NHL Draft, Utah announced Wednesday that the 23-year-old goaltender has signed a two-year contract carrying an average annual value of $2 million. The deal immediately solidifies Cossa as a central piece of the organization’s long-term plans between the pipes.
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Cossa arrives in Utah after spending the past four seasons developing with the American Hockey League’s Grand Rapids Griffins, where he established himself as one of the league’s top young goaltenders. He owns a career 70-33-19 record with a 2.46 goals-against average, a .911 save percentage and eight shutouts across 123 regular-season appearances.
His strongest campaign came in 2025-26, when he posted a 26-8-4 record, a 2.33 goals-against average and a .915 save percentage while recording five shutouts in 39 games. The performance earned him his second consecutive selection to the AHL All-Star Game after also receiving the honor in 2025.
Although most of his professional experience has come in the AHL, Cossa has already made his NHL debut. He appeared in his first game with the Detroit Red Wings on Dec. 9, 2024, stopping 12 of 14 shots to earn his first career victory against the Buffalo Sabres.
Before beginning his professional career, Cossa emerged as one of the premier goaltending prospects in junior hockey with the WHL’s Edmonton Oil Kings. He compiled a 71-16-7 record with a 2.12 goals-against average, a .921 save percentage and 14 shutouts over 98 games from 2019 through 2022.
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His dominance was particularly evident during the 2020-21 season, when he led the WHL with a 1.57 goals-against average and a .941 save percentage. One season later, he backstopped the Oil Kings to a league championship, finishing the postseason with a 16-3 record, a 1.93 goals-against average, a .919 save percentage and five shutouts in 19 playoff appearances.
That championship run also carries a familiar connection for Utah. Cossa spent all three of his WHL seasons alongside current Mammoth forward Dylan Guenther, giving the two an opportunity to reunite as teammates at the NHL level.
Internationally, the Hamilton, Ontario, native captured a gold medal with Team Canada at the 2022 IIHF World Junior Championship after previously representing Team Canada White at the 2018 World Under-17 Hockey Challenge.
Originally selected 15th overall by the Red Wings in the 2021 NHL Draft, Cossa now joins the Mammoth with a proven track record of success at every level he has played. By following last week’s trade with a new contract, Utah has made an early statement that it views the towering netminder as an important part of the franchise’s future.
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