With a magnificent performance on the road in a pivotal late-season game, the surging Buffalo Sabres took another huge step in their charge to the playoffs. In the process, Buffalo dealt a severe blow to the erring Washington Capitals. Ryan Miller stopped 44 shots, Drew Stafford scored two goals and the Sabres beat Washington 5-1 on Tuesday night to climb over the Capitals into the eighth and final playoff spot in the Eastern Conference.