Vokoun helps Caps edge Sens, remain unbeaten

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Tomas Vokoun made 33 saves, including 26 in 1 win over the Ottawa Senators.

Nicklas Backstrom and Marcus Johansson provided two first-period goals for the Capitals, who start 4-0 after their fourth consecutive one-goal win.

Peter Regin scored the lone goal for Ottawa, which has lost four of its first five games this season.

Alex Auld stopped 24-of-26 shots for the Senators.