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The Cowboys, like the Lions, finished last year on a roll.
After firing coach Wade Phillips, offensive coordinator Jason Garrett took over and opened up the playbook.
As a result, the running game found their niche and the defense played very well.
Add to that the fact that star quarterback Tony Romo was hurt nearly all year, and this team's turnaround was truly impressive.
Key For Detroit
Make no mistake about it, this is the toughest matchup amongst the first four games of the year.
This Cowboys team is arguably the toughest in a very tough NFC East, and Romo is going to have a huge year.
The Lions will need to keep pace with the Cowboys offense, as this game is sure to be a shootout.
The Cowboys receivers are going to eat the Lions' cornerbacks alive. Miles Austin and Dez Bryant are big and fast, and unlike anything the Lions will face this year.
That being said, their offensive line is a mess, and the Lions should feast on their running game.
This game, like the one against Tampa, will be one that will come down to the wire. In a lot of ways, this game could be a big indicator of how successful this team can be.
If they can outscore the Cowboys, it will give this team even more confidence heading into the next quarter of the year.
If they fail to keep pace, they could take a step back.
I'm betting they have just enough firepower to hold on.