Desmond hit a pair of run-scoring singles to lead Washington to a 5-2 victory over the Pittsburgh Pirates on Sunday, snapping the Nationals' four-game losing streak.
Washington was 3 for 12 with runners in scoring position. That might not seem like a lot, but it felt like plenty for the Nationals and their struggling offense.
The Nationals had gone 2 for 27 with runners in scoring position during their skid.
''Base hits with runners in scoring position, that's how you win ballgames,'' Washington manager Matt Williams said.
Desmond got it done twice.
He singled in the first inning to put the Nationals ahead 2-0 then made it 5-1 with his single in the seventh, helping end the Pirates' four-game winning streak.
Denard Span and Jayson Werth also had two hits for the Nationals, who scored just seven runs during their skid.
''It's nice to get some big hits,'' Washington third baseman Anthony Rendon said. ''We haven't had many lately, but we've tried to stay on an even keel the best we could and we finally got some clutch hits today.''
Doug Fister (2-1) allowed one run and six hits in 5 1-3 innings with four strikeouts and no walks. He has given up two runs in 17 1-3 innings in his past three starts. Rafael Soriano pitched a perfect ninth for his 11th save.
''We were executing and getting ground balls,'' said Fister, the right-hander who was the starter and winner.
''We played a lot of good defense. Guys were running downs balls and turning double plays. And we got on a roll with our hitting, too. It's a day of good baseball.''
Francisco Liriano (0-5) is winless in 14 consecutive regular-season starts, dating to last Sept. 10 when he won at Texas. He gave up four runs, six hits and four walks in five innings while striking out five.
''I'm not doing my job at all,'' Liriano said. ''I'm not going deep into games and I'm not keeping the team in the ballgame.''
Neil Walker had three hits for the Pirates.
Josh Harrison hit his third home run and Ike Davis also had two hits.
The Nationals jumped on Liriano for two runs in the first inning. Span led off with a double and later scored on a wild pitch. Desmond followed with his first RBI single.
Washington doubled its lead to 4-0 in the fifth when Rendon hit a run-scoring triple and scored on another wild pitch by Liriano, who won 16 games last season.
''I thought he had sequences of all three pitches in some spots,'' Pirates manager Clint Hurdle said of Liriano. ''The consistency, drawn out over the five innings, was not there.''
Harrison led off the sixth inning with his home run, a drive into the visitors' bullpen in center field, but the Nationals got the run back in the seventh on a second run-scoring single by Desmond.
Davis singled in a run in the eighth to draw the Pirates within 5-2.
Washington is 21-1 when scoring four runs or more and 4-21 when it doesn't.
NOTES: The Pirates plan to recall RHP Brandon Cumpton (0-1 4.26) from Triple-A Indianapolis on Monday to start against Mets RHP Jacob DeGrom (0-2, 2.77) at New York. Cumpton, a rookie who made two starts for Pittsburgh earlier this season, will take the rotation spot of LHP Wandy Rodriguez, who was designated for assignment Thursday. ... Washington activated 1B Adam LaRoche from the 15-day disabled list before the game and he batted cleanup. LaRoche had been out since May 10 with a strained right quadriceps. ... Nationals 2B Danny Espinosa got a day off after going 4 for 36 (.111) with 16 strikeouts in his previous 10 games. ... Washington hosts the Miami Marlins on Monday with RHP Tanner Roark (3-2, 3.42) facing RHP Nathan Eovaldi (3-2, 3.41).