They should, and the catcher normally does. It's usually a safety rule for catchers in High School and College Sports.
They wear bowls.
they can if they want to i would!
Most NFL players wear a jockstrap, and some wear a cup
They certainly do.
No, girls do not need to wear a cup when catching baseball.
A uniform: Cleats, Socks, Jersey, pants, sliding shorts, belt, hat or helmet, and a cup (optional)
They wear a cup and protective pads
Many leagues require supporters for all players. Catchers are almost always required to wear a cup as well.
jockstraps A lot of high school football players wear a cup because they are concerned about getting hit in their sensitive area. I do not think that most professional football players wear a cup, however; I think that they just wear a regular jockstrap without a cup. If you are a teenager and are concerned about getting hit in your sensitive area when you play football, then you should wear a cup so you feel secure.
They are wearing a protective cup.