not the same players in game

I'dont know what happened but I have never upgraded joey bosa and somehow it shows that he is a 98 ovr on my team and completley ruined all my team, and when i play a game, for some reason too, my inital squad isn't showing up, instead players in specialist are the ones who are playing , which i really don't understand and it doesn't show my top players, like it shows low overall players when i have higher ones, some one knows why?