Major League Baseball

Overview

Major League Baseball is the highest-level professional baseball organization in America, and the oldest professional sports league in the US, dating back to the Civil War. It generates the second-highest revenue among the Big Four US sports organizations and features the longest season in professional sports.

1440 Findings

Hours of research by our editors, distilled into minutes of clarity.

  • Major League Baseball, explained

    Major League Baseball is America’s oldest professional sports league. Alongside triumphs, the league has faced scandals, including drug abuse and steroid use, shaping its path over the decades. Today, MLB embraces new rules, international talent, and a growing connection to legalized sports betting.

    Illustration featuring Jackie Robinson and Shohei Ohtani
    Video 1440 Original

    Major League Baseball, explained

  • 100 moments that shaped baseball history

    Published in 2018 by baseball historian Jacob Kornhauser, this list examines the defining moments throughout more than a century of play on the field, from Pittsburgh Pirates pitcher Dock Ellis purportedly throwing a no-hitter while on acid to Jackie Robinson breaking the color barrier.

  • The MLB consist of 30 teams

    The league is home to the National and American leagues, which include 780 active players. The MLB season is the longest in professional sports, with 162 games played during the regular season, typically from April through September, ending with the World Series championship in October.

  • Before 1920, a single baseball was used throughout a game

    During the Deadball Era, pitchers doctored a baseball with spit, nail files, and licorice for a competitive edge, leading to discolored, mangled, and lopsided baseballs by the game's end. This concluded in 1920 when Cleveland Indians star shortstop Ray Chapman was hit in the head by a ball too dirty to see and died. The rules were changed to require an umpire to replace a dirty baseball and outlawed the spitball.

  • Every baseball used by the MLB lasts about seven pitches

    Handmade in Costa Rica, the balls meet strict MLB specs: cork or rubber cores, wool yarn, Tennessee cowhide, and 108 stitches. Before play, they’re coated in Lena Blackburne mud from a secret New Jersey spot, ensuring grip and consistency for the big game.

    Influencer August Moon
    Video 1440 Original

    Lifespan of a baseball

  • Every MLB baseball needs to be rubbed with mud

    When baseballs are done being hand-sewn and shipped to an MLB ballpark, they don’t go straight to the field. Every ball that is put in play–an average of 100 per game–has to be rubbed with mud to give the ball a better grip. This video introduces the only family licensed to sell mud to MLB and shows what’s special about this particular mud.

    Man digging with a shovel
    Video

    Business harvests the only substance legally applied to MLB baseballs

  • The physics of baseball pitches

    To a nonfan, pitching a baseball may seem straightforward. Dive into the ridiculous physics of throwing a baseball at high speeds, from curveballs to sliders and more, and learn just how crucial those classic red seams of the baseball are in determining what the ball does in the air.

    Baseball on a bat
    Video

    The physics of baseball pitches

  • In 1975, the reserve clause was dismantled

    Players fought the clause for years, citing the Sherman Antitrust Act of 1890, but to no avail—in fact, the Supreme Court ruled professional baseball was neither interstate nor commerce in 1922. Players unionized in 1966, though, and by 1975, an arbitration panel ruling led to dismantling the reserve clause, which had been the only antitrust exemption in professional sports.

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