When DS8 was about 5, he was trying to make new friends at his new school. I heard him say to a group of boys, "I really hate those Boston Phillies!"

My DS is just like yours. Doesn't know and doesn't care about team spots. Has no sports talent or ability either. We've offered to put him on little league and soccer. Zero interest. He does fine at recess because he likes creating cool games. He does great socially in most areas. There are other boys who are like him so he is not singled out. We live in a large immigrant community. Likely DS knows more about cricket teams than baseball teams. Nothing really to offer you other than we have similar boys. Try to have him seek our others like him, if he can.