onBOSTON — Bruins coach Marco Sturm said he didn’t know the results of Elias Lindholm’s trip to the doctor on Thursday and didn’t have an update on Pavel Zacha yet. Lindholm left Tuesday’s win over the Nashville Predators and Zacha didn’t finish Thursday’s win over the Flyers. The Bruins will practice in Boston on Friday before heading to Tampa to face the Lightning in the Stadium Series game on Sunday. If both Zacha and Lindholm are out, the Bruins would likely summon another forward for the trip. Boston called up Matt Poitras, who centered the third line to open the game against the Flyers, on Thursday.