WASHINGTON -- In spite of a seventh-inning rally for the second game in a row, the Nationals fell shy of a sweep against the Mariners.

Washington lost, 9-5, to Seattle on Sunday afternoon at Nationals Park before the club travels to Atlanta and Cleveland to begin a stretch of 17 consecutive days with a game.

“We didn’t score any runs early, and for them to come back and do what they did -- especially against one of the better bullpens, better pitching staffs -- we’re going to scratch and claw to try to score some runs,” said manager Dave Martinez. “They did it again today. We just fell a little short, but I loved these last three days. We played really well.”

Here are three takeaways from the series finale against the Mariners.

Floro's impressive streak snapped

Dylan Floro entered Sunday with a 0.35 ERA and the longest active streak in the Major Leagues with 21 2/3 scoreless innings. It also was the longest stretch by a reliever this season.

For the first time since April 6, Floro allowed a runner to cross home plate in the series finale.

Floro took the mound for the third day in a row with Hunter Harvey unavailable after pitching in the first two games of the series. J.P. Crawford led off the eighth inning with a double, advanced on a wild pitch and scored on a ground-ball single to center field by Julio Rodríguez. After Rodríguez stole second base, Ty France drove him in with a line-drive single into right field.

“He’s a competitor, he’s a gamer,” Martinez said of Floro. “It doesn’t surprise me that he went through that. It’s awesome.”

Floro had made his mark in Nationals team history (2005-present) in his first season with the club by posting the longest scoreless stretch by a Nats reliever in a single season. He is tied with Stephen Strasburg (Sept. 15, 2014-April 9, 2015) for sixth-most scoreless innings in team history.

“Putting up zeros gets the team the best chance to win,” Floro said. “Being a bullpen guy, that’s kind of the job, to go out there and get the team back in there so we can score runs. Going on a little streak there, knowing I was putting up zeros for the team, that’s probably the best thing for me.”

Abrams heads home to Atlanta with a homer

CJ Abrams made contact. He stood. He watched. He flipped his bat. He knew.

The shortstop rocketed a go-ahead three-run blast off the right-field foul pole to put the Nats up, 5-4, in the seventh inning. He sent a slider from right-hander Ryne Stanek a Statcast-projected 406 feet at 104.7 mph off the bat.

“I was just trying to get a good pitch to hit,” Abrams said. “He gave me three sliders in a row. Last one was in the zone, I put a good swing on it. It felt good to go ahead by a run.”

It was his first homer since April 29 in Miami. Abrams was just 3-for-20 over the first five games of the homestand.

“[I’ve been reminding myself] that I can hit, I want to keep going,” Abrams said. “Baseball’s a game of failure. How you deal with it is big.”

Abrams noted he was hoping the ball would stay fair because he has hit “a couple foul-ball home runs” lately.

“Obviously, we all were elated, but he was very excited,” Martinez said. “It’s a good moment for him. Hopefully, this will get him going a little bit. It’s not like he’s swinging bad, he’s just not getting the pitches that he should to hit and he’s got to learn how to take his walks. That’s the biggest thing for him right now.”

Gallo looks to get into a groove

Joey Gallo had homered four times during his rehab assignment while recovering from a left shoulder AC sprain earlier this month, but a Major League homer had evaded him since April 10.

In the fifth inning, Gallo launched a Statcast-projected 393-foot dinger to center field off a sinker at an exit velocity of 100.2 mph off Mariners starter Bryan Woo. The right-hander had not allowed a home run in his first three outings to begin the season.

The Nationals had been encouraged by Gallo’s approach on Saturday, when he connected on a line-drive RBI single into right field off a first-pitch fastball from righty Trent Thornton in the seventh inning.

“He’s starting to stay behind the baseball,” Martinez said. “He’s trying to stay on top of the ball, so he’s hitting more line drives as you can see. But he’s definitely doing better. When we get him going, we’ll start scoring a lot of runs. So it was nice to see him connect with one today, but I liked the other at-bats when he was lining out.”