Check your roster for a weird player with a low overall rating. Possibly not named either. Usually ends up being a QB. If you have this random player, one of your players became corrupted some how.
A lot of rumors that editing a players position outside of the position change offseason week, editing anything on a player during a certain offseason week or being in the player edit screen when the Dyansty week advances can all be reasons on how a player becomes corrupt. I am sure there are other reasons as well that corrupts a player.
Best rumored fixes are force advancing the year to try and encourage that player to transfer from your team, possibly trying to position change the player to see if their ratings come back to normal, leave your current team or force advance until the player graduates.
We are currently dealing with this issue in our Dyansty and will try any way possible to save our 4 years in. EA has yet to acknowledge this issue so no fix seems to becoming in the near future.
Hopefully this helps. I have read a lot of forums on this issue hoping to come up with some type of work around. All seem hit or miss though unfortunately. Would be nice if EA would work on fixing this.
