NEW YORK — Rasmus Dahlin had four assists and the Buffalo Sabres stopped a 13-game slide by routing the New York Islanders 7-1 on Monday night. The Sabres posted a 6-1 victory at the New York Rangers on Nov. 7. Islanders: New York fell to 6-8-2 at UBS Arena. Key moment Luukkonen stopped Jean-Gabriel Pageau on a prime scoring opportunity …