Backup has some game experience, but there's a lot of difference between Briles having a month to come up with a game plan without the QBs and Patterson trying to come up with one in 48 hours.
I’ve got to assume that the backup took plenty of reps in practice and is pretty much ready to go. Yeah, it’s definitely the third string I’m worried about. As you said, who could really put together a contingency plan for THAT in just a couple of days. Fingers crossed for the Horned Frogs!