Peter John Kilduff (April 4, 1893 – February 14, 1930), was a professional baseball player who played second base from 1917 to 1921, with the Giants, Cubs, and Brooklyn Robbins, and as a player / manager in the minors for several years after. Starting 2B for the pennant winning 1920 Brooklyn Robbins, hitting .272/.351/.360 with good defense, good for 3.4 fWAR at the age of 27. He appeared in the 1920 World Series with the Brooklyn Robins where he was one of three outs in Bill Wambsganss's unassisted triple play. Still currently the only unassisted triple play ever in post season play. He was again a solid contributor in 1921 at the age of 28 but was optioned down to the minors for the 1922 season.