"I don't feel like I've lost a step yet," Gartner said. "Someday I will, but I haven't so far."
Murphy, Toronto's top point-getter, leads all NHL defensemen with 19 points - four goals and 15 assists.
"I feel good," Murphy said. "I'd be lying if I said I'm not happy with the way the numbers look."
Dave Andreychuk and Randy Wood added a goal apiece for the Maple Leafs, who improved to 7-5-3, including 3-0-2 in their last five games.
Veteran Toronto defenseman Todd Gill suffered a pulled hamstring and was not scheduled to make the trip to Boston for a game tonight against the Bruins.
Joe Reekie scored for Washington (9-6-0).
In other news:
PENGUINS: LEMIEUX TO SIT
Mario Lemieux was expected to miss the Pittsburgh Penguins' game against the Los Angeles Kings tonight as a health precaution, the team said.
Lemieux was sidelined by back problems and Hodgkin's disease last season. His back has not been hurting him, but he has avoided playing back-to-back games this season and played last night.
He will likely be back in the lineup on Tuesday as the Penguins play host to the Dallas Stars.