A Mark Kastelic tripping penalty sent the Sabres to an early power play, and the second unit capitalized. Krebs, unaccounted for in the slot, received Quinn’s pass and snapped a shot past Korpisalo to give Buffalo a 1-0 lead at 4:19.

Sam Lafferty went to the box for roughing after a scrum around Luukkonen’s net, then a Connor Clifton boarding penalty gave the Bruins 51 seconds of 5-on-3. A big shot block by Mattias Samuelsson helped Buffalo survive the two-man deficit before killing off the second penalty as well.

Jordan Greenway fought Nikita Zadorov, both of them 6-foot-6, after Zadorov shook up Tage Thompson with an open-ice hit in Buffalo’s offensive end. That marks three straight games with a fight for the Sabres.

Thirteen minutes in, both Sabres defensemen lost their sticks in the defensive zone and Zacha scored to tie the game 1-1. And Geekie added a breakaway goal 2:13 later to put Boston ahead.