Keith, Murphy, Kempny, and Rutta are all top 4 defenders. Oesterle is close.
The problem is Kempny is lucky to even get to play because Q made a snap decision to not like him for some reason and Q deploys his defense all wrong.
Last game Kempny played 10 min, Rutta 14, while Seabs played 23 and Oesterle 26.
He can't coach defense, admittedly doesn't coach offense, can't put together a sensible roster (his fwd lines have been better lately), and doesn't deploy players to give them and the team the best chance for success.