I don't think that this is necessarily the case, but I hope that OU badly underestimated Tulane and was no particularly ready to play.
But I'm skeptical of that assessment, because, after a slow start, the Sooners played a dominant 2nd quarter, then failed to play much at all in the 2nd half.
We've got a 2nd-half problem, and have had one since Lincoln Riley became our coach. Whether we take our foot off the throttle, or Riley's play-calling becomes predictable, or some other reason, we way too often blow seemingly comfortable leads.