Pete Alonso hit a long tying home run in the eighth inning, Amed Rosario had a winning infield single with two outs in the ninth and the New York Mets rallied from deficits three times to beat the Washington Nationals 6-5 Tuesday night.

Washington led 1-0 in the fifth, 3-1 in the seventh and 5-4 in the eighth, but the Mets (22-25) kept bouncing back and won their second straight game after general manager Brodie Van Wagenen said Mickey Callaway will remain the team’s manager “for the foreseeable future.”

Alonso hit his 16th homer, breaking the Mets rookie record for long balls before the All-Star break set by Ron Swoboda in 1965. The drive on a 1-2 fastball from Tanner Rainey (0-1) rose 126 feet, went over the foul pole and bounced off the Porsche Grille restaurant. The home run call on the field was upheld by a video review.

New York Mets Brandon Nimmo, right, celebrates with the Mets Amed Rosario (1) after Rosario hit a walk-off, RBI single during the ninth inning of a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
New York Mets Brandon Nimmo, right, celebrates with the Mets Amed Rosario (1) after Rosario hit a walk-off, RBI single during the ninth inning of a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)

Rainey walked Adeiny Hechavarria and J.D. Davis starting the ninth, Kyle Barraclough relieved and Jeff McNeil grounded into a forceout that left runners at the corners. McNeil advanced on defensive indifference and, with Robinson Canó on deck, Rosario hit a two-hopper grounder to shortstop and beat Trea Turner’s throw.

Edwin Díaz (1-2) worked around a ninth-inning single for his first win with the Mets. Washington lost its third straight.

Mets starter Zack Wheeler gave up three runs and four hits in seven innings, while Washington’s Erick Fedde allowed one run and four hits in five innings.

New York Mets Adeiny Hechavarria (11) and Mets Pete Alonso (20) douse New York Mets Amed Rosario with Gatorade after Rosario hit a walk-off, RBI single to lift the Mets to a 6-5 victory over the Washington Nationals in a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
New York Mets Adeiny Hechavarria (11) and Mets Pete Alonso (20) douse New York Mets Amed Rosario with Gatorade after Rosario hit a walk-off, RBI single to lift the Mets to a 6-5 victory over the Washington Nationals in a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)

John Soto homered in the first, but McNeil tied the score with a fifth-inning single. Brian Dozier put the Nationals back ahead with a two-run homer in the seventh, but J.D. Davis’s three-run pinch homer off Wander Suero gave the Mets a 4-3 lead in the bottom half.

Turner hit a tying double in the eighth off Jeurys Familia and scored on Soto’s double against Daniel Zamora.

TRAINER’S ROOM

New York Mets Pete Alonso reacts back toward the Mets dugout after hitting a game-tying, eighth-inning, solo home run in a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
New York Mets Pete Alonso reacts back toward the Mets dugout after hitting a game-tying, eighth-inning, solo home run in a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)

Nationals: RHP Jeremy Hellickson (strained right shoulder) was placed on the 10-day IL. Washington manager Dave Martinez does not think it will be a long stint. Hellickson saw a doctor Monday and was cleared to keep throwing. … RHP Aníbal Sánchez (strained left hamstring) had a bullpen session Tuesday and could throw a simulated game Friday.

Mets: OF Michael Conforto (concussion) rode a bike on Monday, his first physical activity since being placed on the 7-day concussion IL. Callaway said he did not know whether Conforto would be activated when first eligible on Friday. … CF Brandon Nimmo (sore neck) was a late scratch from the starting lineup. … LHP Jason Vargas (left hamstring tightness) will throw a bullpen session Wednesday and could pitch this weekend against Detroit.

UP NEXT

New York Mets Amed Rosario (1) watches his ninth-inning, walk-off, run-scoring single in the Mets 6-5 victory over the Washington Nationals in a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
New York Mets Amed Rosario (1) watches his ninth-inning, walk-off, run-scoring single in the Mets 6-5 victory over the Washington Nationals in a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)

RHP Max Scherzer (2-5, 3.72 ERA), the 2016 and 2017 NL Cy Young Award winner starts for Washington and RHP Jacob deGrom (3-5, 3.98), the 2018 NL Cy Young winner starts for New York in a rematch of opening-day starters. The Mets won the opener 2-0 as deGrom struck out 10 and allowed six hits in six innings. Scherzer gave up two runs and two hits in 7 2/3 innings, striking out 12. Scherzer is 10-5 with a 2.59 ERA in 19 appearances (18 starts) against the Mets. DeGrom is 8-4 with a 2.50 ERA in 16 starts against Washington.

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Washington Nationals relief pitcher Tanner Rainey (21) rubs his elbow after allowing a game-tying, eighth-inning, solo home run to New York Mets first baseman Pete Alonso in a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
Washington Nationals relief pitcher Tanner Rainey (21) rubs his elbow after allowing a game-tying, eighth-inning, solo home run to New York Mets first baseman Pete Alonso in a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
Washington Nationals relief pitcher Tanner Rainey touches his elbow as New York Mets Pete Alonso trots the bases after hitting a game-tying, solo home run during the eighth inning of a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
Washington Nationals relief pitcher Tanner Rainey touches his elbow as New York Mets Pete Alonso trots the bases after hitting a game-tying, solo home run during the eighth inning of a baseball game, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
Washington Nationals Juan Soto (22) reacts toward the Nationals dugout after hitting a game-tying, RBI double in the eighth-inning of a baseball game against the New York Mets, Tuesday, May 21, 2019, in New York. Second base umpire Ryan Blakney is at right. (AP Photo/Kathy Willens)
Washington Nationals Juan Soto (22) reacts toward the Nationals dugout after hitting a game-tying, RBI double in the eighth-inning of a baseball game against the New York Mets, Tuesday, May 21, 2019, in New York. Second base umpire Ryan Blakney is at right. (AP Photo/Kathy Willens)
New York Mets pinch hitter J.D. Davis, left, reacts as he rounds the bases after hitting a seventh-inning, three-run, home run off Washington Nationals relief pitcher Wander Suero, right, during a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
New York Mets pinch hitter J.D. Davis, left, reacts as he rounds the bases after hitting a seventh-inning, three-run, home run off Washington Nationals relief pitcher Wander Suero, right, during a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
New York Mets pinch hitter J.D. Davis reacts as he rounds the bases after hitting a seventh-inning, three-run, home run during a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)
New York Mets pinch hitter J.D. Davis reacts as he rounds the bases after hitting a seventh-inning, three-run, home run during a baseball game against the Washington Nationals, Tuesday, May 21, 2019, in New York. (AP Photo/Kathy Willens)