Mammoth Recall Daniil But, Reassign Dmitri Simashev

The Mammoth are swapping a pair of their top prospects. The team announced they’ve recalled winger Daniil But from AHL Tucson while sending down defenseman Dmitriy Simashev in a corresponding move. Center Kevin Rooney was also placed on waivers and will be assigned to Tucson if he clears.

But and Simashev were both top-15 picks in the 2023 draft, the last premier prospects drafted under the Coyotes moniker before the franchise’s hockey operations were sold and reestablished in Utah. Simashev went sixth overall, while But went 12th. The two spent their entire careers in Lokomotiv Yaroslavl’s system in their native Russia, winning a Gagarin Cup championship together last year before signing their entry-level contracts and heading to the Mammoth for 2025-26.

While Simashev managed to wrestle a roster spot on the blue line, But was left on the outside as one of the Mammoth’s final roster cuts. He took the demotion in stride. After netting back-to-back 20-point seasons in the Kontinental Hockey League with Lokomotiv, he’s rattled off eight goals and 17 points in 19 games with Tucson to lead the club in scoring.

After a hot start to the season, Utah’s offense has cooled off. They’re now 19th in the league with 2.96 goals per game. Some of that can be attributed to a power play that’s languishing at a league-worst 13.2%, but their 10.3% finishing rate is also below average by a few ticks. Chance generation hasn’t been much of an issue – they’re 12th in shots per game and have the fifth-most scoring chances in the league at 5-on-5 – but the offensive output outside of their top five forwards leaves a little to be desired. Alexander Kerfoot’s persisting absence has been a contributing factor there, as well as underwhelming performances from middle-six centers Barrett Hayton and Jack McBain, who have five points each in 24 and 27 appearances, respectively.

But isn’t a guaranteed fix, but the 20-year-old’s smooth adjustment to North America shows he’s worth a shot. Most will see him listed at 6’5″ and 203 lbs and assume a high-ceiling power forward – he is not. Physical elements aren’t entirely absent from But’s game, but he’s a skill guy first and foremost. In their draft-year scouting report of But, Elite Prospects highlighted “his ability to chain difficult pass receptions into handling moves and handling moves into passes or shots” and praised his release as well. He’s another name in a star-studded Mammoth forward pool that’s now also gained Tij Iginla at sixth overall in 2024 and Caleb Desnoyers at fourth overall this year. Those two are viewed as slightly higher-ceiling talents, pushing But down to the No. 4-ranked prospect in Utah’s pool last offseason by Steven Ellis of Daily Faceoff and by NHL.com.

As for Simashev, the writing was on the wall regarding his demotion. He’s run into a recent string of healthy scratches following Sean Durzi’s return from injured reserve, sitting in the press box three times in Utah’s last eight games. His first NHL sample didn’t change his status as the Mammoth’s No. 3 prospect behind Iginla and Desnoyers and as their top young defenseman. Also of hulking stature at 6’4″ and nearly 200 lbs, he’s a shutdown man who’s never put up flashy point totals – he scored just once in 29 junior games in his draft year – but does have some good first-pass ability.

His initial audition, though, shows that some minor-league time wouldn’t be the worst thing. Rarely does a defender with his skillset make a smooth adjustment to the NHL at age 20. In 24 appearances, he notched one assist and a -9 rating while averaging 15:28 of ice time per game. He got some top-pairing deployment with countryman Mikhail Sergachev, but also saw significant time lower on the depth chart with Ian Cole. The lefty was outscored 15-7 at 5-on-5 and controlled 47.5% of shot attempts, 7.1% worse than how Utah fared without him on the ice. With Durzi back in the fold and veteran Nick DeSimone posting better possession impacts in a limited sample, it was hard to justify keeping Simashev in a regular role – at least for now.

Rooney’s waiver placement signals the end of his third stint on Utah’s roster this season without receiving much playing time. He finally made his Mammoth debut last week on Friday against the Stars, notching a goal in 9:44 of ice time. The 32-year-old has served as a No. 14/15 forward for much of the year after signing a two-way deal at the end of training camp. It’s his second time on waivers after he cleared them following his signing. Across a few brief loans to Tucson, the 6’2″ pivot has five goals and an assist in eight appearances.

Image courtesy of Nick Turchiaro-Imagn Images.