We have two great cornerbacks, how will Urban decide who to start?

In all seriousness though, I've been very impressed with the cornerback play so far this season. Gareon Conley was huge last week. It's so nice to have cornerbacks that actually turn around and knock the ball away (or pick it off) instead of watching the receivers the whole time.
So far Ash has been a great hire. And Luke Fickell is doing a great job too. After all the heat he took a couple years ago it's great to see the progress they've made. Hopefully he'll stick around after this season but you have to imagine he'll be getting some interest.
I expect the offense will get things worked out soon and if the defense continues to play this way it should be a lot of fun to watch.