The 1903 Brooklyn Superbas season was a season in Major League Baseball. The Superbas began their slide from contention in the National League by finishing in fifth place.

Offseason

Regular season

Season standings

Record vs. opponents

Notable transactions

Roster

Player stats

Batting

Starters by position

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

Other batters

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

Pitching

Starting pitchers

Note: G = Games pitched; Games started; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; BB = Bases on balls; SO = Strikeouts; CG = Complete games

Other pitchers

Note: G = Games pitched; GS = Games started; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; BB = Bases on balls; SO = Strikeouts; CG = Complete games

Relief pitchers

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