I think trap games do exist, but generally they are a function of the schedule. It's tough to get fully up for every game, so after an especially emotionally charged rivalry game with another big rivalry or highly ranked team coming a week after the trap game it's certainly possible. Travel can figure into it as well. Having said that, this isn't one. The last game will have been several weeks gone and even if Clemson is rated to win handily, it's the playoffs and ND is probably the best team they'll have played this year, they'll be up for it.