The Black Sox scandal
Veteran ace Eddie Cicotte (pictured) of the Chicago White Sox was 29-7 with a 1.82 ERA in 1919 before he became one of eight key figures in the infamous scandal that broke in September 1920 with widespread news reports of gambling in baseball. Cicotte admitted to a grand jury that month that he'd accepted $10,000 from gamblers to help fix the 1919 World Series in favor of Cincinnati. (He was 1-2 with a 2.91 ERA in 22 innings.) Cicotte and his conspirators were acquitted, then promptly banned from the game for life by Commissioner Kenesaw Mountain Landis.