A trap game is the one contest on every team's schedule that is easy to overlook. Either the opponent is not impressive or the game precedes or follows a more highly publicized test against a marquee foe.
It's tough for a powerhouse such as Alabama to wake up for a trip to Starkville to take on Mississippi State a week after its SEC showdown against LSU in Tuscaloosa. You really think Oregon wants to travel to Colorado?
Some games simply don't motivate players, and that's when the opponent that everybody has counted out sets the trap.
Note: Rankings are in order of the latest AP poll.