Mordecai Peter Centennial Brown, nicknamed Three Finger or Miner, was an American Major League Baseball pitcher during the first two decades of the 20th century. Due to a farm-machinery accident in his youth, Brown lost parts of two fingers on his right hand, and in the process gained a colorful nickname. He turned this handicap into an advantage by learning how to grip a baseball in a way that resulted in an exceptional curveball, which broke radically before reaching the...
(wikipedia)