After months of speculation, the Buffalo Sabres have finally pulled the trigger on trading a blossoming young star player in JJ Peterka. The young German star (based on PPG in 2024-2025) was traded to the Utah Mammoth in exchange for Josh Doan and Michael Kesselring. Following the completion of the trade, Peterka, who was due to become an RFA on July 1^st, signed a five-year $38.5M ($7.7M AAV) extension with the Mammoth. As has been the case with the off-season moves so far at Black Stitch Hockey, let’s look at what both teams are getting in the deal.

               In three full seasons with the Buffalo Sabres, Peterka has shown immense offensive upside. As a rookie, he posted a 1.7 P/60 5v5 before upping that number to 2.2 and 2.3 during the 2023-2024 and 2024-2025 campaigns respectively.  This level of ability has also translated to his GAR metrics. In his rookie campaign, he posted a -2.8 GAR due to a 1.9 Off GAR and a -4.6 Def GAR, which can be sugar coated that he struggled to create value for his team as he learned how to play effectively at the NHL level. The learning curve was incredibly short for Peterka. Over the past two seasons he’s posted GARs of 15.0 and 15.1 while being a massive play driver for the Sabres. 2023-2024 was impressive as his GAR was positive in Offense, Defense, and Penalties (Drawn/Taken), making him an important player in all three tracked phases of the game. In 2024-2025, Peterka’s defensive play took a hit, cratering to a -6.6 Def GAR; however, by posting an Off GAR of 20.9 he more than adjusted for the gaps in his own zone. Simply put, Peterka has shown truly elite offensive ability in the last calendar year, and if Utah capitalizes on that by pairing him with other top end scorers like Logan Cooley and Clayton Keller, they have a strong chance of qualifying for the playoffs in 2025-2026.

               Josh Doan is an interesting acquisition for the Sabres as his time in the NHL has been brief to this point, and his relevant sample size was a mere 51 games in 2024-2025. In his draft year, the Byron Bader production model saw him as a virtual zero percent chance of being a star player based on his NHLe during his time in the USHL, and despite improved performances in his D+1 though D+3 between the USHL and the NCAA, and a solid 2023-2024 campaign with the Tucson Roadrunners of the AHL, it still feels like Doan’s ceiling is that of a middle-six two-way forward. Doan’s 1.5 P/60 5v5 as a rookie in Utah was respectable. He also produced a GAR of 5.6 that comprised of a 2.7 and a 2.6 between offense and defense that showed he’s a capable NHLer at a young age. Doan will be a solid role player for the Sabres if they keep him around. Kesselring has an interestingly high amount of value to Sabres particularly due to his mobility and being a right-handed defenseman. In two full time seasons in Arizona and Utah, Kesselring maintained a P/60 5v5 of 1.2 and 1.1 which is reasonable for a top-4 defender. In terms of GAR value, in those two seasons, Kesserling has posted rates of 5.6 and 0.6, creating a touch of uncertainty as to what he will be in the NHL. If he’s paired with Rasmus Dahlin or Owen Power, he should be able to continue to develop the defensive side of his game, but he does have the puck moving skills to increase the effectiveness of either of his potential pairing mates. If the coaching in Buffalo isn’t terrible to the 15^th year in a row, expect Kesselring to potentially be a key acquisition for the Sabres.

               Overall, this trade has teeth for both teams. The Mammoth are taking very little risk to acquire a player whose ceiling could be franchise altering in Peterka, and the interest surrounding Utah continues to get louder heading into their sophomore season. For Buffalo, this just feels like more of the same from an organization who continues to lower the bar for the depths to which a franchise’s inadequacy can measure. Optimistically, filling a much-needed RHD spot in this deal is a win for a Buffalo team that hasn’t had that in the Dahlin/Power era, but getting a role player in your forward group to replace a star just leaves such a bitter taste in the mouth when evaluating the deal. Hopefully, both teams can turn the corner with this trade, but it’s far more likely for one than the other.