Confirmed or Suspected Users of Performance Enhancement Drugs and Baseball Records

Since 1900, the game of baseball had undergone many changes. In 1909, Ty Cobb led the American League by hitting nine home runs. In 2001, Barry Bonds set the record by hitting 73 home runs. Before 1920, pitchers were allowed to doctor the baseball. After 1920, many new and legal pitches have been developed to …