As with any sport involving a clock, momentum can shift over the course of an entire game. For the Flyers, it shifted three times.
They seemed to have momentum following Zac Rinaldo's five-minute major for charging gave them a lengthy power play to start the second period. After five minutes, the Flyers had no shots and had allowed a shorthanded goal to boot. Momentum was in Boston's favor.
Then with 12 minutes left in the third, Steve Mason took momentum back. His save on David Pastrnak kept the deficit at two. Moments later, Claude Giroux and Wayne Simmonds had scored to tie the game.
The comeback was complete and would lead to two points as Giroux added his second goal on an overtime power play.
The Flyers could have hung their heads through two periods, looking at the fact that down by two with 20 minutes to play was just too insurmountable. Instead, they turned in a strong period to erase the deficit, another early statement for the character this team could possess.