I was never a Donnie Duncan fan, but he hired 2 good basketball coaches.
Donnie Duncan had nothing to do with hiring Sherri Coale. Sherri was hired sometime in the spring of 1996, a full two years after Kelvin Sampson was hired. By the spring of 1996, Steve Owens was in "Acting AD" mode and calling the shots. After hiring John Blake (winter of '96) and Sherri, he defended those hires by saying something to the effect of: "I'm tired of the perception that good coaches can't be found right here in the state of Oklahoma." Well, he batted .500 on those two hires.
I don't think Donnie Duncan would have hired either of those two coaches.