2023 Miami Marlins season

The 2023 Miami Marlins season was the 31st season for the Major League Baseball (MLB) franchise in the National League and the 12th as the Miami Marlins. The Marlins played their home games at LoanDepot Park as members of the National League East. It also was the team's first season under the management of Skip Schumaker.

On May 10, the Marlins set an MLB record 12th consecutive one-run game won to start a season, jumping the 1972 New York Mets who started 11-0.

With a win over the Washington Nationals on September 3, the Marlins improved on their 69–93 record from the 2022 season. Following another win against the Milwaukee Brewers on September 24, their 81st of the season, the Marlins secured their first non-losing full season since the 2009 season, when the team was still known as the Florida Marlins.

On September 30, the Marlins clinched their first playoff berth since the 2020 season and first in a full season since the 2003 season. They lost to the Philadelphia Phillies in the NLWCS in a two-game sweep, ending their season.

Rule changes
Pursuant to the CBA, new rule changes took place for the 2023 season:


 * institution of a pitch clock between pitches; 15 seconds from when the pitcher gets the ball to when he begins his throwing motion and 18 seconds with runner(s) on base. If the pitcher waits too long an automatic ball will be added to the count. And batters must be in the batter's box engaged with the pitcher before the pitch clock reaches 8 seconds or an automatic strike will be called on him
 * limits on pickoff attempts per plate appearance; a pitcher may only pickoff 3 times, if the pitcher does not succeed the 3rd time he will be called for a balk.
 * limits on defensive shifts requiring two infielders to be on either side of second base and be within the boundary of the infield; and engaged with the infield dirt
 * larger bases (increased to 18-inch squares);

Batting
Note: G = Games played; AB = At bats; R = Runs; H = Hits; 2B = Doubles; 3B = Triples; HR = Home runs; RBI = Runs batted in; SB = Stolen bases; BB = Walks; AVG = Batting average; SLG = Slugging average Source:

Pitching
Note: W = Wins; L = Losses; ERA = Earned run average; G = Games pitched; GS = Games started; SV = Saves; IP = Innings pitched; H = Hits allowed; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; SO = Strikeouts Source: