WASHINGTON >> The Washington Capitals are one win away from the first championship in their 43-year history after routing the Vegas Golden Knights 6-2 on Monday night to take a commanding 3-1 lead in the Stanley Cup Final.T.J. Oshie, Tom Wilson and Devante Smith-Pelly all scored in the first period to get the Capitals rolling against a determined Vegas team that had no answers early against Braden Holtby, who stopped 28 shots in another strong showing.