Jake Guentzel scored a pair of goals to lead the Penguins to a 3-1 win over the Capitals in Game Four of their second-round series in Pittsburgh.
Evgeni Malkin snapped a 1-all tie late in the second with a replay reviewed goal to put the Pens in front.
Matt Murray made 20 saves for Pittsburgh, which evened the best-of-seven Eastern Conference semifinal at two games apiece.
T.J. Oshie had the lone goal for Washington in the second. Braden Holtby allowed two goals on 23 shots in defeat.
The series heads back to D.C. for Game Five tomorrow night.