The Cowboys couldn't have entered Sunday's game on a bigger high, after beating the Rams in dominating fashion.
Everything was set up perfectly for the Cowboys, who had a shot to clinch their second straight NFC East title.
But the Cowboys produced one of their worst games of the season, falling to the Eagles 17-9.
Let's break down what happened, what it means and where the Cowboys can go from here.
The Cowboys had the NFC East title wrapped up perfectly, sitting under the tree with a big bow on it. But instead, chose not to open it, and now the Eagles are in control of winning the division.