Center Sean Couturier, the Flyers’ MVP in each of the last three years, will miss the rest of the season after undergoing successful back surgery Friday. Flyers GM Chuck Fletcher said Couturier had surgery performed by Dr. Jon Yoon at Pennsylvania Hospital, and that he should be at 100 percent for the start of training … Continue reading Flyers’ Sean Couturier out for season after back surgery; Risto won’t play Sat.