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.

  • The top 100 players in baseball history

    More than 20,000 players have played in Major League Baseball since the 1870s, many passing in and out of the memory of even die-hard fans. While necessarily subjective, these rankings based on votes from baseball writers ranks those whose greatness left a lasting impression. From Barry Larkin (No. 100) to Babe Ruth (No. 1), explore the top 100 baseball players over more than a century.

  • The 2026 season will be the first to allow challenges on balls and strikes

    The Automated Ball Strike (ABS) technology—first tested in the minor leagues and in MLB's 2025 spring training and All-Star Game—defines the strike zone rather than relying on individual umpires' interpretations of it. Rather than allowing ABS to determine every ball or strike, though, each team will now have a limited number of in-game challenges to umpires' calls, which will be settled by ABS.

  • Inside MLB's robo-umping experiment

    Human umpires call roughly 94% of pitches right overall, but performance reduces on borderline pitches in high-leverage moments, the calls that shape game outcomes most. A professor and historian analyze early experiments with the full "robot ump" system that helped shape MLB's decision to implement a compromise "challenge" system.

  • A deep dive into the man behind ballpark nachos

    Nachos were invented in Mexico in 1943, but "ballpark nachos" (featuring liquid cheese and pickled jalapenos) were invented in 1976 for the Texas Rangers, then a relatively new franchise. This Texas Monthly piece digs into the history of Frank Libreto, who realized classic nachos could be a cost-efficient concession with just a few small tweaks.

  • MLB teams can travel with roughly 12,000 pounds of gear and luggage

    Each of the league's 30 teams has travel directors facilitating intricate logistics to move players and luggage to the next city, often after a game and the night before another game day. This video breaks down the wild planning required.

  • 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.

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