Why do they ignore me? What do I do?

I have this group of friends..whenever I talk to them they always seem to roll there eyes or ignore me. When I comment on something I say they "burn" me in some way. Mostly every night I go home crying. Everyone says that I need "new" friends, but the problem is..Is that we do all sports together. Two of my friends moms coach a sport that I do. I dont know what I can do, so they don't treat me like this. When I'm with one of my friends they talk to me all the time. But, it comes a problem when we are in a group. I love these friends that I have right now..I just need help on what to do so they respect me. Please help.