The Sabres are much improved this season. They are in a great ambush spot against Washington. Buffalo last played on Monday at home losing 3-2 in a shootout to Arizona. 
The well-rested Sabres draw the Capitals in Washington's first game back from a highly successful five-game road swing. 
The combination of a huge plus price, Sabres' improvement and the letdown spot for the Capitals makes it worth backing the underdog.