If for any reason the Redskins manage to win this game, Detroit won't have another opportunity even half as good until Week 8 (against the team the Redskins barely managed to beat, although I place the blame on the lack of a shutout in that game squarely on DeAngelo Hall).
The good news for Detroit is that Week 8 victory is already assured. The bad news is, barring a victory over the Redskins, they'll be 0-6 entering the Week 7 bye.