The Bruins announced they’ve placed defenseman Michael Callahan on injured reserve. In a corresponding move, defenseman Victor Söderström was recalled from AHL Providence under emergency conditions. Boston is still working with an open roster spot after the moves.
Callahan, 26, sustained a lower-body injury on Tuesday against the Red Wings and left the game in the first period. There was no visually apparent injury, but the Bruins quickly ruled him out of a return and head coach Marco Sturm said postgame they weren’t expecting him back in the lineup for at least a few days (via Ty Anderson of 98.5 The Sports Hub).
The IR placement rules Callahan out of tonight’s contest against the Blues and will also hold him out of Saturday’s game against the Devils. He’ll be eligible for activation ahead of a rematch against St. Louis next Tuesday.
Callahan, a Massachusetts native, was an injury replacement himself. He’d been called up from Providence last weekend – his third stint on Boston’s roster this season – after Henri Jokiharju landed on IR with an undisclosed injury.
Initially a 2018 fifth-round pick by the Coyotes, Callahan has developed into a solid organizational depth piece for the Bruins. He’s a no-fuss stay-at-home defenseman who’s comfortable operating in the No. 8-10 range on an NHL depth chart and can handle the role of a frequent call-up option who doesn’t get extended stints in either the NHL or AHL well.
His five NHL appearances this season have brought his career total up to 22, with the other 17 all coming last season. He’s averaged 13:53 of ice time per game in bottom-pairing duties, recording one goal and a -6 rating.
The 6’2″ lefty doesn’t play a particularly physical game, with only 0.5 hits per contest. His possession metrics in his limited sample are promising, though. Boston has controlled 46.7% of shot attempts at 5-on-5 despite him starting only 30.5% of his shifts in the offensive zone.
Coming up to relieve Callahan and make his Bruins debut tonight is Söderström. He’s also a former Coyotes prospect but was a much more high-profile one, going No. 11 overall in the 2019 draft.
Söderström, now 24, had 11 points in 53 career NHL games with Arizona before he opted to spurn his qualifying offer from Utah in 2024 and return home to Sweden. He signed with Brynäs IF of the Swedish Hockey League and re-emerged as a star, posting a 9-28–37 scoring line and a league-leading +28 rating in 49 games and was named the Swedish Defenseman of the Year.
That piqued his interest in an NHL return, but he wasn’t interested in signing with the Blackhawks, who had acquired his rights from Utah at the 2025 trade deadline. In June, Chicago flipped his rights to Boston for a seventh-round pick in this year’s draft and depth defender Ryan Mast.
Söderström promptly signed a two-way deal with the Bruins, carrying a $400K guarantee. He was viewed as the primary competitor to offseason pickup Jordan Harris to win a roster spot as Boston’s extra defenseman, but lost the battle in training camp and ended up on waivers.
He was reassigned to Providence after clearing, and the 6’0″ righty has quietly gone about his business with a 1-8–9 scoring line and a +3 rating in 18 games. With Jokiharju and Charlie McAvoy both on IR, he suddenly slots in as Boston’s top puck-moving option on the right side, although he’s not expected to see power play deployment with Hampus Lindholm and Mason Lohrei anchoring the first and second units, respectively.
Söderström is eligible for an emergency recall because the Bruins wouldn’t have six defensemen available without him. He’s eligible to remain with them under emergency conditions as long as that scenario persists. That distinction is essential for waiver-eligible players because their standard 10-game, 30-day clock on the roster until they require waivers again resets if those emergency conditions are removed.