1909 MLB season
LeagueMajor League Baseball
DurationApril 12 – October 16, 1909
Number of games154
Number of teams16
Pennant Winners
NL championsPittsburgh Pirates
  NL runners-upChicago Cubs
AL championsDetroit Tigers
  AL runners-upPhiladelphia Athletics
World Series
ChampionsPittsburgh Pirates
  Runners-upDetroit Tigers
MLB seasons

The 1909 Major League Baseball season was contested from April 12 to October 16, 1909. The Pittsburgh Pirates and Detroit Tigers were the regular season champions of the National League and American League, respectively. The Pirates then defeated the Tigers in the World Series, four games to three.

In the National League, the Chicago Cubs had a record of 104–49, but finished 6+12 games behind the Pirates, setting a record for the most wins in an MLB regular season without reaching the postseason, which has only been equalled once, by the 1942 Brooklyn Dodgers, who had a record of 104–50.[1]

MLB statistical leaders

American League National League
AVG Ty Cobb DET .377 Honus Wagner PIT .339
HR Ty Cobb DET 9 Red Murray NYG 7
RBIs Ty Cobb DET 107 Honus Wagner PIT 100
Wins George Mullin DET 29 Mordecai Brown CHC 27
ERA Harry Krause PHA 1.39 Christy Mathewson NYG 1.14
Ks Frank Smith CHW 177 Orval Overall CHC 205




  World Series
  AL Detroit Tigers 3
  NL Pittsburgh Pirates 4


American League

Team Manager Comments
Boston Red Sox Fred Lake
Chicago White Sox Billy Sullivan
Cleveland Naps Nap Lajoie
Deacon McGuire
Detroit Tigers Hughie Jennings
New York Highlanders George Stallings
Philadelphia Athletics Connie Mack
St. Louis Browns Jimmy McAleer
Washington Senators Joe Cantillon

National League

Team Manager Comments
Boston Doves Harry Smith
Frank Bowerman
Brooklyn Superbas Harry Lumley
Chicago Orphans Frank Chance
Cincinnati Reds Clark Griffith
New York Giants John McGraw
Philadelphia Phillies Billy Murray
Pittsburgh Pirates Fred Clarke
St. Louis Cardinals Roger Bresnahan



  1. ^ Adler, David (September 30, 2019). "Best MLB teams to miss the postseason". MLB.com. Retrieved October 8, 2020.
  2. ^ Pellowski, Michael J (2007). The Little Giant Book of Baseball Facts. United States: Sterling Publishing Co. pp. 352. ISBN 9781402742736.