Nick Markakis homered into the second deck in right field to give the Baltimore Orioles a 2-1 win in 11 innings over the Washington Nationals on Friday night.
Markakis' blast off Nationals reliever Ryan Mattheus (2-1) helped the Orioles improve to 6-2 in extra innings with all six victories coming on the road.
The first-place Orioles have won four straight.
Four Orioles relievers followed starter Jake Arrieta, including Kevin Gregg (2-1) in the 10th inning. Pedro Strop allowed two runners to reach in the 11th inning before finishing off the Nationals for his third save.
Arrieta matched his career-high with nine strikeouts. He allowed one run and six hits, walking one in seven innings.
Edwin Jackson matched him, allowing one run in eight innings with eight strikeouts and one walk.
Adam Jones drove home the Orioles first run with a first inning infield single against Jackson. Washington's Ian Desmond tied the game with a solo home run in the sixth inning against Arrieta.