In the video above, ESPNBoston.com's Mike Reiss gives his three keys for the Patriots in their Thanksgiving game against the Lions:
1. Winning the line of scrimmage battle: New England's offensive front will be tested.
2. Defending Calvin Johnson: Reiss thinks he is one of the best receivers in the game.
3. Kickoff coverage: The Lions are ranked first in the NFL in kickoff return average.