On October 8, 1908, Mordecai Brown clutched a half-dozen notes inside his coat pocket. The message of each was clear: we'll kill you if you pitch and beat the Giants. A black handprint marked each note, the signature of the Italian Mafia.
Mordecai Brown--dubbed "Three Finger" because of a childhood farm injury--was the dominant pitcher for the great Chicago Cubs team of the early twentieth century. Brown's handicap enabled him to throw pitches...