John Albert Pfiester (May 24, 1878 – September 3, 1953), was a professional baseball player who pitched in the Major Leagues from 1903 to 1911. Pfiester was born in Cincinnati, Ohio. In his rookie season in 1906, Pfiester finished with a 1.51 ERA (one of the best rookie seasons by any pitcher ever), and he went on to finish with a 1.15 ERA in 1907. His career ERA was 2.02, the 3rd lowest among pitchers with 1,000+ innings thrown, and he had a .617 winning percentage. On September 23, 1908 against the New York Giants he pitched a complete game (which involved Giant first baseman Fred Merkle’s infamous boner, which resulted in the game ending in a tie), allowing five hits, all with a dislocated tendon in his pitching forearm. He had to be assisted off the field a few times after throwing cur