McDermott is the clear worst coach in the Big 12 IMO.
After him, it's probably Knight.
Those are the only two guys who I'd really consider bad coaches at this point (if you can separate coaching and recruiting).
Would give McDermott a little breathing room though considering he's had top players bolt early transferring to other schools or going overseas (Staiger sp? this year). Wesley Johnson is a former ISU player that is lighting it up at Syracuse now. The name slips my mind but he's had a third as well. Sadler is doing the worst now. At least ISU has popped them at least once this season....and did it in Lincoln. Would put Pat Knight up their for contention as well.