Waters was very bad in the designed QB run game. I'll bet most of his rushing yards came from scrambles.
OK, the stats suggest Ertz is a better runner than Waters. I will concede I was wrong on that one.
That said, I hope that Ertz progresses enough that he can:
1. lead us down the field running the ball for a winning TD (ISU 2014) and
2. takes a big hit but gets right back up and plays through pain (OU 2014).