The Utah Mammoth have made a significant move ahead of the NHL trade deadline, acquiring veteran defenseman MacKenzie Weegar from the Calgary Flames. This deal bolsters Utah’s blueline as the team pushes for its first playoff appearance since relocating to Salt Lake City in 2024. Sportsnet Deseret News
In exchange, Calgary receives defenseman Olli Maatta, promising prospect Jonathan Castagna, and three second-round picks in the 2026 NHL Draft. The trade, first reported by Sportsnet and confirmed by multiple sources, required Weegar to waive his no-trade clause. Sportsnet

Trade details
Utah sent Olli Maatta, a 31-year-old veteran signed through 2027-28 at a $3.5 million cap hit, to Calgary. Maatta has struggled for ice time this season, appearing in just 22 games with an average of 12:10 per night, down from 19:55 last year. Sportsnet
Jonathan Castagna, a 20-year-old center drafted 70th overall in 2023, heads to the Flames unsigned. Currently in his third season at Cornell University, he has tallied 32 points in 29 games this year, showcasing strong offensive potential. ProHockeyRumors
The draft capital includes Utah’s own second-rounder, plus ones acquired from the New York Rangers and Ottawa Senators—the latter stemming from the 2023 Jakob Chychrun trade during the franchise’s Arizona Coyotes era.
This package helps Calgary manage cap space while acquiring future assets amid a rebuilding push. The Flames, mired in another disappointing season, have already moved players like Rasmus Andersson earlier this year. Sportsnet
Cap-wise, Weegar’s $6.25 million AAV fits after shedding Maatta’s deal, adding about $3 million to Utah’s payroll.
MacKenzie Weegar’s profile and fit
At 32 years old and in his 10th NHL season, Weegar brings experience and versatility. Signed through 2030-31, his full no-trade clause shifts to a 10-team list after next season.
This year with Calgary, Weegar posted 3 goals and 18 assists in 60 games, skating to a league-worst minus-35 rating while logging heavy minutes around 23 per game. HockeyDB Sportsnet
His production has dipped from peaks like 20 goals and 52 points in 2023-24, prompting the change of scenery. Utah envisions him rediscovering form, potentially paired with top defender Mikhail Sergachev on the right side. Deseret News
Weegar’s two-way game, physicality, and power-play skills could stabilize Utah’s defense. In Calgary, he was part of the 2023 package for Matthew Tkachuk but couldn’t replicate earlier success. Prior to the Flames, Weegar thrived with the Florida Panthers, establishing himself as a reliable top-four presence.
What Calgary gains
The Flames acquire immediate depth with Maatta, who offers steady veteran play despite reduced usage in Utah. His contract provides flexibility for further moves before the March 6 deadline.
Castagna represents high-upside youth, blending skill and skating that could accelerate Calgary’s youth movement. As an excellent athlete, he fits their prospect pipeline.
The three second-round picks offer lottery potential in a deep 2026 draft. Sources note Calgary’s focus on retooling, with names like Nazem Kadri and Blake Coleman potentially next on the block.
This deal continues Calgary’s sell-off, marking four straight playoff misses. It nets future assets without surrendering top prospects.
Impact on Utah Mammoth’s playoff push
Sitting in the first wild-card spot in the West with a 32-25-4 record, fourth in the Central Division, Utah desperately needs defensive reinforcements. Hockey-Reference
Weegar’s arrival addresses inconsistencies on the blueline, pairing well with Sergachev or others like John Marino. GM Bill Armstrong retained all first-round picks and top prospects, signaling a playoff-or-bust mentality.
The Mammoth, powered by Clayton Keller and Logan Cooley up front, now boast deeper defense for a grueling postseason. Their first playoffs since 2024 restart loom large.
Fans in Salt Lake City can expect a boost in physicality and minutes-eating capability. Recent moves like this position them strongly in the wild-card race.
For more on Utah’s recent resilience, check out coverage of their Hurricanes comeback loss and Clayton Keller’s leadership amid personal challenges here.
Looking to the deadline and beyond
As the deadline nears, Utah appears active yet prudent. Weegar’s long-term deal provides stability beyond this season.
Calgary, meanwhile, prioritizes youth and picks. Weegar reflected on trade rumors, saying, “Just like they’ve got to consider trading me, I’ve got to consider all the options too. But I love it here. I want to win here.” Sportsnet
This trade exemplifies deadline dynamics: contenders buying experience, sellers stocking the future. For Utah, it could be the piece that unlocks playoffs; for Weegar, a shot at redemption.
Details emerged via insiders like Elliotte Friedman on Sportsnet and local analysis on Deseret News.
What it means for the Central Division race remains unfolding, but Utah’s tusks just got sharper.
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Par Mike Jonderson
Mike Jonderson is a passionate hockey analyst and expert in advanced NHL statistics. A former college player and mathematics graduate, he combines his understanding of the game with technical expertise to develop innovative predictive models and contribute to the evolution of modern hockey analytics.