The Green Bay Packers are widely considered to be invincible at Lambeau Field, and they are still undefeated at home this season. They host the Lions this Sunday, and this is a game with massive playoff implications. The winner will clinch the NFC North, and get a first round bye. Detroit is getting a bunch of points here, and I'll take the underdog.

Here are my keys to the game:

1. Defense - The Lions rank right behind the Seattle Seahawks in total defense, and they are 1st overall against the run. The Packers have not been so impressive on the defensive side of the ball, and we saw Matt Ryan burn them for 375 yards and four TDs in their last home game. That might not bode well as they get set to face the NFL's best receiver in Calvin Johnson.

2. Aaron Rodgers - He's listed as questionable with a calf injury, but everyone knows there's no way he misses this game. He didn't have a lot of success against the Lions in Detroit, throwing for just 162 yards and a TD on 16-of-27 passing.

3. X-Factor - Green Bay is 3-2 straight up in the last five in this series, but only one of those wins came by more than a TD.

Selection: This is a play on the Detroit Lions (10*)