https://goo.gl/photos/crEmAADnL9V95ZxT9
Fox Sports Go was updated a few days, and the only thing that I really checked was video quality to see if they had improved the 30fps.
Low and behold, while messing about with the on screen transport controls I see the PIP options right below the controls. It works well enough, even though the video quality is still not great.
Now we just need the asshats @ Comcast to add support
Wish AT&T Uverse and Fox Sports would figure out who is to blame for not having Uverse listed as an available provider with the Android TV app registration page. They literally blamed each other for a week straight on twitter when I called them both out. Still not available ( https://www.foxsportsgo.com/androidtv - enter random chars and submit - no Uverse).
If you want 60 fps use the Kodi add-on for now