We have been buried in reports of peoples BTR Score dropping by huge amounts. We have looked into it, and there is something going on w/ the data at EA.
Here is an example:
As you can see, this player played -2821 games yesterday. Pretty impressive :)
We're contacting the right people to see what happened. It's happening to a lot of players, so I am confident we'll get a fix! We'll update you on our homepage when it's fixed!
7/24/2017 Update We have spoken to EA about it - we are still waiting for what the resolution will be! Thanks.