A shallow pocket makes for a faster transfer from glove to hand and allows the infielder to quickly dispose of the ball by making the corresponding throw. A Rundown of the Differences Between Fastpitch and Slowpitch Softball Gloves. You should apply pressure to the ball through the use of your thumb and forefingers to create a “pocket.” Pitcher's gloves should measure between 11.5 and 12.5 inches. Wilson A2000 SuperSkin Slowpitch Softball Glove. For players 15 and up, infielders may fit with a 12 to 13, while outfielders may use a 12.5 to 14.