Dynamic difficulty adjustment. If you're wondering why all of a sudden you get over throws, cover 4 drop stops and inside run in the backfield, get knockouts with sure hands, or my favoite your coverage dumbing out. It's DDA.
EA will say it's to give worse teams/players a slight advantage. Nope, it's designed to make you think your team is shit and head to the store to buy something to fix your team.
I'm not buying CFB 26 if it has DDA.