1903 Brooklyn Superbas season

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

 * January 30, 1903: Jack Doyle was purchased by the Superbas from the Washington Senators.
 * February 17, 1903: Henry Thielman was purchased by the Superbas from the Cincinnati Reds.
 * February 17, 1903: Rube Vickers was purchased by the Superbas from the Cincinnati Reds.

Notable transactions

 * September 5, 1903: Tom McCreery was purchased from the Superbas by the Boston Beaneaters.

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''

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