O'Brien, a former offensive coordinator with the New England Patriots, has been impressed by Hackenberg, and is eager to see if he can bounce back after a loss.
"He's a self-confident kid,Curry 1 Lux Mid Leather," O'Brien said. "He's just got a really good demeanor. He's sure of himself. He knows he has good ability. He's a good person. He's a calm guy, which is great for me because I'm not a calm guy."