The New York Mets beat the Washington Nationals 2-1 on Monday, clinching the National League Championship Series against the Boston Red Sox and clinching their second straight postseason berth.

The victory was the first of four in the series, which has been contested between the teams for the last four years.

The Mets won their second-straight game, and won the first two.

They’re now 3-2 against the Nationals in their last four games, and 6-1 all-time against them.

The Nationals led 2-2 in the bottom of the ninth.

The Mets scored a run off a groundout in the ninth and scored three runs in the 11th to get a 3-1 lead.

The Red Sox hit a two-run homer off Matt Wieters in the 10th to make it 3-3, and the Mets responded with a three-run single off Drew Stubbs in the eighth to tie the game.

A two-out single by Chris Heisey in the third tied the game at 3.

The Nationals went up 5-4 in the top of the 12th.

The next batter, Nate McLouth, walked, and Wieter went deep in the corner.

The Nationals scored two runs in that inning, including a run in the second by Nate McLuth, who hit a solo shot to give the Mets a 5-3 lead.

Bryce Harper’s solo shot in the seventh gave the Mets an 8-3 advantage.

The lead would shrink to 3 in the 13th inning.

Wieters walked, but the Mets added two runs on a sacrifice fly by Anthony Rendon and a fielder’s choice to take a 9-4 lead.

A sacrifice fly in the 14th off Jacob deGrom gave the Nationals a 10-3 edge.

Heiseya, the Nationals’ leadoff hitter, hit a pinch-hit single in the 15th to tie it.

The next batter went deep to give Wiety a 6-3 deficit, but Rendon had an RBI double and a single off Bryce Harper in the 16th to give them a 9:30-to-5 advantage.

Harper went deep on a 2-run blast in the 17th to cut the lead to 7-5.

The Red Sox scored on a single by Wieterson, a RBI double by Rendon, a single from Brandon Belt and a walk to give Washington a 10th-inning lead.

The score was 10-7.

The second inning was one of the most tense in baseball.

The bases were loaded and the game was tied at 8 when the first pitch hit the ground.

Wiether walked the bases loaded and walked out of the bases.

He had three hits and was hit with a walk-off single.

The first baseman, Nate McClouth, was called out for interference in the middle of the order.

The second baseman, Ian Desmond, made the error.

McLouth and Desmond, however, both got out of trouble in the next inning.

Desmond singled off Wieterman in the fifth, and McClouth homered off Wiederman to give him a 9, the last of his career.

Desmond also walked the second baseman and scored.

The game was deadlocked at 8, and a third-inning walk-out pitch was called by Desmond in the first inning.

McClouth then walked out to left field and scored on an RBI single to make the score 11-8.

McCluth would go on to score his last run of the night on a solo home run in order to tie a series record for the most runs scored in one inning.

The last batter to score was Rendon with a two out single in right field.

McClouton was tagged out at home plate by Desmond and scored to put the Mets up 14-7, but he would go the rest of the way without a run.

McCluson would score five more runs before the game ended.

Wiederman, the team’s second-leading hitter with 12 home runs, had a career-high three RBIs, one walk and four runs scored.

Harper had four hits and three runs.