1903 Major League Baseball season
The 1903 Major League Baseball season, saw the relocation of the original Baltimore Orioles to New York City, and become the Highlanders, the last relocation in MLB until 1953, when the Boston Braves moved to Milwaukee, along with the playing of the first modern World Series with the Boston Americans defeating the Pittsburgh Pirates.
Major league baseball final standings
Post-season
"Battle of Ohio"
The Cincinnati Reds and Cleveland Naps played an unofficial best of 11-game exhibition series after the regular season, with Cleveland winning the series six games to three.League Leaders
Note: AB = At bats; R = Runs scored; H = Hits; 2B = Doubles; 3B = Triples; HR = Home runs; RBI = Runs batted in; BB = Walks; SO = Strike outs; SB = Stolen bases; W = Wins; L = Losses; ERA = Earned run average; CG = Complete games; SH = Shutouts; IP = Innings pitched; K = Strike outsBatting
Pitching
| Stat | Player | Team |
| W – 28 | Cy Young | Americans |
| L – 22 | Patsy Flaherty | White Sox |
| ERA – 1.74 | Earl Moore | Naps |
| CG – 34 | William Edward Donovan, Cy Young, Rube Waddell | Tigers, Americans, Athletics |
| SH – 7 | Cy Young | Americans |
| IP – 341.2 | Cy Young | Americans |
| K – 187 | Rube Waddell | Athletics |
Managers
American League
National League
Events
- August 1 – Joe McGinnity becomes the first pitcher to win two complete games on one day, with 4–1 and 5–2 victories for the New York Giants over the Boston Beaneaters in a doubleheader.