The 2015 season was the 54th in the history of the Mets. The team was led by manager Terry Collins for the fifth consecutive year. The Mets posted a 90-72 won-lost record and won their sixth National League East Division championship. They went on to become National League Champs before a five-game defeat to the Kansas City Royals in the World Series.
For the Mets, the season got off to a good start with 15 wins in their 23 April games. At Washington on April 6, they chalked up a 3-1 win over the Nationals in the season opener. After dropping three of their next four games, the team defeated the Braves with a 4-3 triumph at Atlanta. This victory was followed by a sweep of an entire ten-game homestand against the Phillies, Marlins and Braves for a club record-tying 11-game winning streak. The Mets lost four of six on an ensuing road trip before ending the month with an 8-2 defeat to the Nationals at Citi Field. They led the National League East Division by four and one-half games over the Marlins and Braves at month's end.
Things slowed down for the Mets in May. The team posted 13 victories in 28 games for the month. At Citi Field, the team chalked up a 4-0 win over the Nationals on May 1 and swept the Orioles in a two-game interleague series on May 5 and May 6. The team won two of three in a weekend series at Philadelphia before losing all four games of a series to the Cubs in Chicago. On May 16, the Mets scored ten runs in an inning and emerged with a 14-1 win over the Brewers at Citi Field. They split four games with the Cardinals from May 18 to May 21 and followed up with three straight defeats at Pittsburgh. The Mets won all three games of a series against the Phillies from May 25 to May 27 and concluded the month with a 4-3 triumph over the Marlins at Citi Field. They found themselves in second place in the division, one-half game behind the Nationals.
The Mets continued to stagger in June, winning 12 and losing 15. They started the month with three victories in seven games at San Diego and Arizona before falling victim to a no-hitter by the Giants' Chris Heston on June 9 at Citi Field. The Mets won five of six home games against the Giants, Braves and Blue Jays from June 11 to June 16 before a seven-game skid dropped them to a game below the .500 mark (36-37) for the season. On June 25, the team recorded a 2-0 win at Milwaukee and followed with a three-game sweep over the Reds at Citi Field. After a 1-0 defeat to the Cubs on June 30, the Mets had a 40-38 record and were three and one-half games behind first-place Washington.
The Mets got back on the winning track with a 13-12 won-lost record in July. After getting swept by the Cubs, they triumphed in four of six games at Los Angeles and San Francisco. On the final weekend before the All-Star Break, the team concluded a three-game sweep of the Diamondbacks with a 5-3 victory at Citi Field on July 12 as Kirk Nieuwenhuis became the first Mets player to hit three home runs in a home game. At St. Louis on July 19, the Mets came away with a 3-1 win over the Cardinals in 18 innings. They lost four of their next five games before posting 21 hits in a 15-2 victory over the Dodgers on July 25 at Citi Field. Lucas Duda homered three times in a 7-3 defeat to the Padres at Citi Field on July 29. Two days later, the team came out with a 2-1 triumph over the Nationals in 12 innings at Citi Field that placed them two games behind the Washington club in the NL East.
August was an outstanding month for the Mets. The team recorded 20 wins and eight defeats and took over the top spot in the N. L. East during the month. The Mets began August by completing a series sweep of the Nationals and followed up with four victories in six games at Miami and Tampa Bay. From August 10 to August 13, they swept a four-game series against the Rockies at Citi Field. After dropping four of five to the Pirates and Orioles, the Mets went on a seven-game winning streak with series sweeps at Colorado and Philadelphia. The team lost two of three to the Red Sox before a 3-1 triumph over the Phillies on August 31. The Mets held a six-and-one-half game lead over the second-place Nats in the division.
In September, the Mets recorded sixteen victories and emerged with a National League East Division championship. They began a three-game sweep of the second-place Nationals with an 8-5 Labor Day triumph at Washington on September 7. The team followed up with a sweep of a four-game series in Atlanta that concluded with a 10-7 victory over the Braves in 10 innings on September 13. After dropping six of nine games on an ensuing home stand, the Mets chalked up four wins (including the division-clincher on September 26) over the Reds in a series at Cincinnati.
The Mets finished the regular season with a 1-0 win over the Nationals at Citi Field on October 4. Five days later, they began the best-of-five Division Series by defeating the Dodgers, 3-1, at Los Angeles. The team also recorded 13-7 and 3-2 victories in games 3 and 5, respectively, to advance to the National League Championship Series. On the strength of seven home runs (four by MVP Daniel Murphy), the Mets pasted a four-game sweep on the Chicago Cubs and entered their first World Series in fifteen years. The team went down to defeat in the final game of the Series against the Royals on November 1 at Citi Field.