The Golden Knights haven't proven to be good underdogs losing 22 of the past 28 times in that role. They are in that role here traveling to Boston having lost five of their last six games. 
The Bruins have beaten Las Vegas in each of the last four meetings and should be highly motivated for this matchup after blowing a 3-0 road lead to the Penguins this past Sunday. The last time Boston blew a three-goal lead in a regulation game was 2011. 
There's a 50-50 chance the Golden Knights could be without their star goalie, Marc-Andre Fleury. He has to sit out a one-game suspension for bypassing the All-Star Game. Fleury will either sit out this game, or a game following the All-Star break. There's a huge drop from Fleury to the Golden Knights' backup goalie Malcolm Subban.