What do you mean? While CBS had the DH FOX has both an early and late game. The late game is for the following markets
-the two teams playing (Nawlins & Baltimore)
-any team that had a home game on CBS early (no game can be shown opposite the home team)...this was Chicago, Indy and Jacksonville
Then there are markets where even though they could show an early game, decides to not go up against the "local team". In this case was Boston (NE), Houston, & Buffalo. They were the road teams but the FOX affiliate decided not to go up against the local team.
Then there was DC that got a waiver to show it (technically they wouldnt be able to as Washington was at home...but the NFL caved)
The oddball spots were Arizona, Portland, OR and San Diego
The game got done real close to 6PM CDT (give or take a minute or two) so they probably just JIP'd the FOX rerun there. Again it was reruns from 6-7 CDT so nothing was "pre-empted"