The Baseball Stars

I was taking my 16 yr old son to his baseball game. And I asked him if he had everything he needed, like a cup and batting gloves, he said he didnt wear a cup. He told me he never wore one and that he doesnt need one. His father is out of the picture, so I kinda have to deal with these things. Anyway we got into a huge fight about the cup and I told him he could go without it this game, but we would have a serious talk about it for the next one. Any suggestions from moms out there?