Great question WNAS and one that has me greatly concerned. UT's freshman QB Jerrod Heard converted many third and long situations for the horns on designed run plays in the RRS. Throw in a few scrambles from the pocket and he had a career day against OU. He only had to throw 12 times in that game and Watson is a much, much better passer than Heard.
After the RRS, we never really played a dual-threat QB all season, unless you count OSU Jay Walsh as a "dual threat" QB, which I don't. Mike Stoops has a huge job on his hands to come up with a scheme to slow down DeShaun Watson. I would rather see us sell out to stop their running game and limit his ability to keep the chains moving with his legs. He threw for 3,500 yards, so he'll make some plays throwing the ball, but if we can contain him, put pressure on him and force him to make some bad throws, we might get a couple of picks and turn them into points. This will undoubtedly be our defense's biggest challenge all season.