Padded support shorts sometimes worn to protect the thighs when the player slides into the bases. Some sliding shorts contain a pocket for a protective cup. This is so the player does not have to wear a jockstrap and sliding shorts at the same time, although many players find the cup is held in place better by wearing it in a jockstrap under sliding shorts.
also called jock or athletic supporter. An undergarment worn by boys and men for support of the testicles and penis during sports. A jockstrap by itself holds the testicles up and close to the body to help keep them from being squished between the thighs, or from twisting or hangingout. The jockstrap with cup pocket contains a pocket to hold a protective cup.