Mickey Haefner
Milton Arnold "Mickey" Haefner, also known as "Itsy-Bitsy" Haefner, was an American knuckleball-throwing left-handed pitcher in Major League Baseball who played eight seasons from 1943 to 1950, six and a half of them with the Washington Senators, later joining the Chicago White Sox and the Boston Braves. His career record was 78–91, with an ERA of 3.50.