The 1999 New York Mets season was the franchise's 38th season and the team's 36th season at Shea Stadium. They went 97–66 and finished second in the National League East but won the NL Wild Card by beating the Cincinnati Reds in a one-game playoff. The Mets advanced to the NLCS, where they were defeated by the Atlanta Braves in 6 games. The Mets were managed by Bobby Valentine, who entered his fourth year as skipper. They played home games at Shea Stadium.

Offseason

Regular season

The Mets' 97 victories were their highest total since they won 100 games in 1988. They were led offensively by catcher Mike Piazza, who compiled a .303 average with 40 home runs and 124 RBI in his first full season with the team. New third baseman Robin Ventura put together a .301 average, 32 home runs, and 120 RBI while second baseman Edgardo Alfonzo hit .304 with 27 home runs and 108 RBI. First baseman John Olerud continued his consistent hitting, hitting .298 with 96 RBI, his third straight year with 90 or more runs driven in. Offseason acquisitions Roger Cedeño and Rickey Henderson recorded the two highest batting averages on the squad at .315 and .313 respectively. Benny Agbayani, a semi-regular outfielder who got more playing time as the year progressed, contributed 14 home runs. The Mets' pitching staff was again led by Al Leiter with 13 wins. Orel Hershiser matched that total, with Masato Yoshii recording 12 wins and Rick Reed 11. Rookie Octavio Dotel went 8-3 in fourteen starts, and late season acquisition Kenny Rogers won five of six decisions while leading the team in complete games. The rotation was not as strong at keeping runs off the board; the team's four main starters recorded ERAs above 4.00. The offseason acquisition of Armando Benitez from the Baltimore Orioles ended John Franco's tenure as the team's closer. Franco did manage to record nineteen saves and broke the Major League Baseball record for saves by a left-hander, but Benitez' 1.85 ERA and twenty-two saves ensured the closer role would be his for the foreseeable future.

Mercury Mets

As part of the now-infamous Turn Ahead the Clock promotion sponsored by Century 21, the Mets changed their name to the "Mercury Mets" while hosting the Pittsburgh Pirates on July 27, 1999.

Opening Day starters

Season standings

Record vs. opponents

Notable transactions

Game log

Roster

Player stats

Batting

Starters by position

''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters

''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Pitching

Starting pitchers

Note: G = Games pitched; GS = Games started; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Postseason

Game log

Farm system

LEAGUE CHAMPIONS: GCL Mets