The Washington Nationals are riding a four-game winning streak and will look to keep up their momentum with a Memorial Day victory over the visiting Baltimore Orioles at 1:05 pm ET.

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Via ESPN:

Washington (26-24) had dropped a season high-tying four straight before winning three of four, defeating Philadelphia 6-1 on Sunday. Stephen Strasburg threw eight innings and Steve Lombardozzi doubled home a pair of runs for the Nationals, who have collected at least 10 hits in three straight contests.

"Things are starting to unfold," shortstop Ian Desmond said. "We're starting to play the game better."

While the Nationals appear to be back on track, the Orioles (27-23) saw things fall apart in a 6-5 walkoff loss at Toronto on Sunday. Baltimore had won four of five and appeared headed for another victory before closer Jim Johnson allowed four runs in the ninth inning.

It's been a rough couple of weeks for Johnson, who's blown four of his last five save chances while surrendering 12 runs in his last six appearances spanning five innings.

"We should be getting on the plane with three wins here, but I can't hang my head too long," he said. "It's going to hurt for a little bit, and it should."

The Orioles now turn their attention to the Nationals, from whom they've taken 10 of 15. These clubs play again Tuesday in Washington before the series shifts to Baltimore.

"It's a place we have played before, it's not as much adjustment as there usually is," Orioles manager Buck Showalter said of Nationals Park. "The game is the game -- it's 90 feet (between bases). But the biggest thing is trying to familiarize yourselves with the players."

Baltimore may not be looking forward to facing Gio Gonzalez (3-2, 3.66 ERA), who's gone 1-0 with a 1.67 ERA in four starts this month. The left-hander allowed one run and four hits over 7 1/3 innings Wednesday, retiring 15 of 16 at one point in a 2-1, 10-inning win at San Francisco.