Lunaris

Hello everyone.   I am having a problem  that I dunno how to fix on this game.   CPU changes my players....   For exemple, I have for rb 1) Cook 82ov 2) Lynch 81ov   I like it that way because cook is faster and when I comes close to goalline usually its the 2nd rb that enters and crush it to the zone.   But for no reason when I try a play, no matter which one or where  I am on the field, it always puts Lynch on first.   I now have the same problem with my TE who gets replaced for no reason by a wr   Is there a way to fix this?   Thanks   Lunaris