(AP Photo/Nick Wass)WASHINGTON – Jakub Vrana had a goal and an assist, Vitek Vanecek made 24 saves through overtime and the short-handed Washington Capitals beat the Buffalo Sabres 4-3 in a shootout Friday night in their home opener. Vanecek was perfect in the shootout to pick up his second victory of the season as defenseman John Carlson scored the shootout winner. Buffalo rookie Dylan Cozens scored his first NHL goal on a top-shelf snipe past Vanecek in the second period. Eric Staal and Riley Sheahan each scored his first goal since joining the Sabres. Linus Ullmark made 29 saves and was spotless in the shootout until Carlson beat him.