Starling Marte hit a tiebreaking three-run homer in eighth inning, and the Pittsburgh Pirates beat the Washington Nationals 4-1 Tuesday night.

After struggling to manage anything off Stephen Strasburg through seven innings, Pittsburgh loaded the bases against Wander Suero (3-7) with nobody out in the eighth when Adam Frazier bunted a single past the mound. Bryan Reynolds tied it 1-1 with a sacrifice fly before Marte drove a fastball from Daniel Hudson 397 feet to right-center for his 22nd homer of the season.

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Pittsburgh Pirates' Starling Marte left, celebrates with Melky Cabrera in the dugout after hitting a three-run home run in the eighth inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. The Pirates won 4-1. (AP PhotoKeith Srakocic)

Starling Marte hit a tiebreaking three-run homer in eighth inning, and the Pittsburgh Pirates beat the Washington Nationals 4-1 Tuesday night.
Pittsburgh Pirates relief pitcher Clay Holmes throws against the Washington Nationals in the second inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Holmes came in to replace starter Chris Archer who left the field with a trainer before the start off the inning.(AP PhotoKeith Srakocic)

Suero, who gave up two hits and one walk, was responsible for three of Pittsburgh's four eighth-inning runs.
Pittsburgh Pirates first baseman Josh Bell (55) tags out Washington Nationals' Adam Eaton on a pickoff in the third inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

Strasburg allowed four hits and had six strikeouts in seven innings, and left the game on track for what would have been his career-high 16th win. He has 15 wins in four of his first 10 major league seasons.
Washington Nationals starter Stephen Strasburg pitches against the Pittsburgh Pirates in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

TRAINER'S ROOM
Pittsburgh Pirates starter Chris Archer pitches against the Washington Nationals in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Archer left the field with a trainer before starting the second inning.(AP PhotoKeith Srakocic)

UP NEXT
Washington Nationals' Adam Eaton ( 2) is helped up by on deck batter Juan Soto after scoring from second on a double by Anthony Rendon in the fifth inning of a baseball game against the Pittsburgh Pirates, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

More AP baseball: https://apnews.com/MLB and www.twitter.com/AP_Sports
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Pittsburgh Pirates' Starling Marte left, celebrates with Melky Cabrera in the dugout after hitting a three-run home run in the eighth inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. The Pirates won 4-1. (AP PhotoKeith Srakocic)

Starling Marte hit a tiebreaking three-run homer in eighth inning, and the Pittsburgh Pirates beat the Washington Nationals 4-1 Tuesday night.

Pittsburgh Pirates relief pitcher Clay Holmes throws against the Washington Nationals in the second inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Holmes came in to replace starter Chris Archer who left the field with a trainer before the start off the inning.(AP PhotoKeith Srakocic)

Suero, who gave up two hits and one walk, was responsible for three of Pittsburgh's four eighth-inning runs.

Pittsburgh Pirates first baseman Josh Bell (55) tags out Washington Nationals' Adam Eaton on a pickoff in the third inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

Strasburg allowed four hits and had six strikeouts in seven innings, and left the game on track for what would have been his career-high 16th win. He has 15 wins in four of his first 10 major league seasons.

Washington Nationals starter Stephen Strasburg pitches against the Pittsburgh Pirates in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

TRAINER'S ROOM

Pittsburgh Pirates starter Chris Archer pitches against the Washington Nationals in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Archer left the field with a trainer before starting the second inning.(AP PhotoKeith Srakocic)

UP NEXT

Washington Nationals' Adam Eaton ( 2) is helped up by on deck batter Juan Soto after scoring from second on a double by Anthony Rendon in the fifth inning of a baseball game against the Pittsburgh Pirates, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

More AP baseball: https://apnews.com/MLB and www.twitter.com/AP_Sports

Pirates closer Felipe Vázquez (3-1) went 1 1/3 inning, allowing one hit with one strikeout.

Pittsburgh Pirates' Starling Marte left, celebrates with Melky Cabrera in the dugout after hitting a three-run home run in the eighth inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. The Pirates won 4-1. (AP PhotoKeith Srakocic)

Pittsburgh Pirates' Starling Marte left, celebrates with Melky Cabrera in the dugout after hitting a three-run home run in the eighth inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. The Pirates won 4-1. (AP PhotoKeith Srakocic)

Suero, who gave up two hits and one walk, was responsible for three of Pittsburgh's four eighth-inning runs.

The Pirates, who are 8-28 since the All-Star break, had scored one total run in their previous three games.

The Nationals entered two games ahead of the Cubs for the NL's first wild card, and having won seven of their previous eight games. They had scored at least 13 runs in each of their previous three games, totaling a franchise-record 43 runs during that stretch.

Pittsburgh Pirates relief pitcher Clay Holmes throws against the Washington Nationals in the second inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Holmes came in to replace starter Chris Archer who left the field with a trainer before the start off the inning.(AP PhotoKeith Srakocic)

Pittsburgh Pirates relief pitcher Clay Holmes throws against the Washington Nationals in the second inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Holmes came in to replace starter Chris Archer who left the field with a trainer before the start off the inning.(AP PhotoKeith Srakocic)

Strasburg allowed four hits and had six strikeouts in seven innings, and left the game on track for what would have been his career-high 16th win. He has 15 wins in four of his first 10 major league seasons.

Pirates reliever Clay Holmes hit Adam Eaton with a pitch before being replaced by Michael Feliz in the fifth. Anthony Rendon drove a double to the gap in right-center field off Feliz, scoring Eaton for a 1-0 Nationals lead.

Holmes gave up one run on one hit in 3 2/3 innings after relieving Pirates starter Chris Archer to start the second inning. Archer left with right shoulder discomfort after allowing two hits before stranding runners on second and third with back-to-back strikeouts to end the first.

Pittsburgh Pirates first baseman Josh Bell (55) tags out Washington Nationals' Adam Eaton on a pickoff in the third inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

Pittsburgh Pirates first baseman Josh Bell (55) tags out Washington Nationals' Adam Eaton on a pickoff in the third inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

TRAINER'S ROOM

Nationals: 1B Ryan Zimmerman continued his rehab assignment with the Potomac Nationals on Tuesday. He began the assignment by playing two games for Double-A Harrisburg after being placed on the 10-day injured list with plantar fasciitis in his right foot July 22.

Pirates: RHP Richard Rodriguez (right shoulder inflammation) was reinstated from the 10-day injured list. ... RHP Montana DuRapau was optioned to Triple-A Indianapolis. ... Osuna was reinstated from the MLB Suspended List after serving his five-game ban for his role in a July 30 benches-clearing brawl with the Reds. ... RHP Kyle Crick was placed on the suspended list (three games) for his role in that same July 30 incident.

Washington Nationals starter Stephen Strasburg pitches against the Pittsburgh Pirates in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

Washington Nationals starter Stephen Strasburg pitches against the Pittsburgh Pirates in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

UP NEXT

Nationals: LHP Patrick Corbin (9-5, 3.34) has given up three runs or fewer in 10 of his past 11 starts. He allowed one run on seven hits in six innings of a 2-1 win over Milwaukee his last time out on Aug. 16.

Pirates: RHP Joe Musgrove (8-11, 4.59) will try for his first win in August. He is 0-2 in three starts this month since last winning July 30, when he surrendered two runs in six innings against Cincinnati.

Pittsburgh Pirates starter Chris Archer pitches against the Washington Nationals in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Archer left the field with a trainer before starting the second inning.(AP PhotoKeith Srakocic)

Pittsburgh Pirates starter Chris Archer pitches against the Washington Nationals in the first inning of a baseball game, Tuesday, Aug. 20, 2019, in Pittsburgh. Archer left the field with a trainer before starting the second inning.(AP PhotoKeith Srakocic)

More AP baseball: https://apnews.com/MLB and www.twitter.com/AP_Sports

Washington Nationals' Adam Eaton ( 2) is helped up by on deck batter Juan Soto after scoring from second on a double by Anthony Rendon in the fifth inning of a baseball game against the Pittsburgh Pirates, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)

Washington Nationals' Adam Eaton ( 2) is helped up by on deck batter Juan Soto after scoring from second on a double by Anthony Rendon in the fifth inning of a baseball game against the Pittsburgh Pirates, Tuesday, Aug. 20, 2019, in Pittsburgh. (AP PhotoKeith Srakocic)