The vast majority of sports fans, especially diehard MLB fans, have at least some idea of how difficult it is to hit a baseball. But every now and then, a big league pitcher delivers a pitch that's so filthy and unhittable that it serves as a good reminder of just how hard it is to be a MLB hitter.
Monday's game between the Seattle Mariners and Chicago White Sox, a 5-1 win for the Mariners, featured one such moment. Mariners ace Luis Castillo was on the mound facing White Sox outfielder Austin Slater in the bottom of the second inning with the game scoreless. After pumping four straight four-seam fastballs in the zone, two of which were called strikes and one called a ball, Castillo decided to show Slater something a little different.
