Some kids are teasing a gay boy on my sons Lax team.

This past spring a new boy to town decided to play lacrosse for the first time. Many of the boys were skeptical about his motives. I talked to my children about this and about two boys who seemed to be teasing him all the time. I told my kids that you neverknow if their best friend will annonce they are gay and how would you feel if kids were teasing him? I think the best thing to do is let the coach know but my son refuses to let me do that. My sons claims that he gets on the two boys who are teasing but they are now teasing him. Has anyone ever been in this situation before? Please help.