Ristolainen (upper body) was placed on injured reserve by the Flyers on Saturday.
Analysis:Ristolainen's move to IR is retroactive to Oct. 3, so he can be activated at any time, but it's unclear when he will be ready to return to the lineup. The Flyers needed healthy bodies amid a handful of injuries. The 31-year-old defender has a goal, four shots on net, four hits and seven blocked shots in three appearances to begin the 2026-27 campaign.