Some general game 1 history stats that I thought I'd share:
Historically, in 7-game series, the winner of game 1 goes on to win the series 68.9% of the time (over 718 total series). However, in recent years for the Bruins (since 2008), the winner of game 1 has only gone on to win the series 46% of the time (over 26 series).
The Bruins are 16-10 in game 1s since 2008. When they win, they went on to win the series 9 of the 16 times. When they lose game 1, they rebounded to win the series 7 of 10 times. In round 2 - game 1s, the Bruins are 7-1 overall since 2008 (only loss 2014 vs MTL).