Washington Nationals vs. Miami Marlins WATCH FREE Live Streaming ONline Major League Baseball from Marlins Park at 7:10 PM ET

Looking for a second straight strong outing against them, Steven Strasburg tries to help the visiting Nationals hand Miami a ninth consecutive defeat Tuesday night.

Strasburg (1-1, 4.24 ERA) allowed 10 runs -- seven earned -- and 13 hits while striking out 16 and walking five over 10 1/3 innings in his first two outings. He was much better Thursday against Miami, yielding a homer and two other hits while fanning 12 and walking one in 6 2/3 innings of a 7-1 victory.

Strasburg retired 14 consecutive batters at one point to improve to 2-0 in his last three starts against the Marlins (5-9).

Strasburg will again oppose Tom Koehler (1-1, 3.00), who allowed a two-run homer to and four other hits while striking out six in six innings Thursday.

It's been a tough stretch for the Marlins, who have been outscored 50-22 during their longest slide since dropping nine in a row May 21-30. Miami scored 40 runs while starting 5-1.

"The only way we can get out of this thing is somebody needs to step up, go out there and say, 'It's over, I'm done with it," manager MIke Redmond said.

The Nationals (8-5) outscored the Marlins 22-8 while sweeping a three-game home set last week and extended their series winning streak to five with a 9-2 rout Monday.

Bryce Harper, who had two doubles and a triple Monday, is batting .571 (12 for 21) in the last six games after he went 4 for 25 (.160) in his first six. All five of his RBIs this season have come while batting .467 (7 for 15) with four extra-base hits against the Marlins.

He's been nursing a sore thigh muscle and left Monday as a precaution after he slipped running the bases.

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