Miley (3-3) was locked in a scoreless battle until the Marlins scored twice in the sixth inning. The left-hander was charged with two runs on five hits and a walk, while striking out six. Miley has lost three of his last four starts.

Miley will pitch Saturday against the Padres. Miley lost to San Diego on May 3, allowing four runs on nine hits and three walks in five innings.

Dunn walked the bases loaded before getting pinch hitter A.J. Pollock to ground out to shortstop to end the threat. It was Dunn's first 2013 save and second career save.

Cishek retired the first two batters, but his inherited runner scored. Cishek then allowed a single and walk before being replaced by Mike Dunn, who earned his first save of the season.

Nolasco (3-5), whose career-high for strikeouts in a game is 16, allowed a run on five hits and a walk. He threw 74 of 110 pitches for strikes. The right-hander had lost three straight starts coming entering Sunday.

Nolasco will next start Saturday against the Chicago White Sox. Nolasco is 7-10 with a 5.35 ERA in 19 career interleague starts.

Pittsburgh combined for a three-hitter to leave Harrell (3-5) with the loss, his third straight since winning three in a row. He struck out three and his only mistake was a solo homer to Pedro Alvarez in the fifth inning. 

Harrell has allowed one earned run in six of his 10 starts this season and two or fewer runs in seven of his 10 outings. But he's also allowed five or more runs in each of his other three starts. 

Harrell makes his next scheduled start Saturday against Oakland. 

"I think he's gotten into a better rhythm with our pitchers. He has a better understanding," said Girardi. "He's been able to watch them a few times. He's gotten back there with I think almost everybody at this point. I think he's just getting more comfortable."

Romine is batting .182. He's been seeing more time of late with Francisco Cervelli on the DL and Chris Stewart battling a recent injury. 

The Nationals were hopeful Werth would have come off the disabled list this week, but his delay was because he visited with a specialist in New York.

"They worked the hamstring very well," Rizzo said. "They found out how they wanted to work it. In doing all that work on it, they flared it up. Hopefully, it’ll make it better in the long run. But they flared it up so he didn’t want to play the next day in the minor leagues. We’re having him rest today, and he’ll start ramping up baseball activities this week."

Detwiler might not make his following start either, but Thursday's off-day gives the team flexibility and it can keep Detwiler off the DL.

"We’re hoping he does pitch," Rizzo said of Detwiler returning to action May 26 vs. Philadelphia. "We don’t have to call up a pitcher, a starter, from the minor leagues. We’re hoping Ross can take the next start. If not, we can skip his start and guys are still on regular rest."

But the Nationals would need Detwiler to be ready by May 28 in order to avoid Jordan Zimmermann pitching on short rest.

"In essence, we’ll have 10 or 11 days until that spot needs to pitch again," Rizzo said. "We think Ross will be OK by then."

Aviles has hit in three-straight games and has gone 5 for 11 with two doubles, a homer and three runs scored over that stretch. He's batting .292.