Psalm Wooching is a good one. We all hated him but he somehow defied the odds and started on the 2016 D?
Also, I thought Kevin King was one of the worst players I had ever seen playing safety under Sark. Then he ended up as an early second round pick at corner. Turns out coaching matters.
Maybe that's what Asa Turner needs too...a position switch. King was too slight to play safety. Turner has a different but still similar issue that he self imposes...he can't or won't make tackles that are going to be painful to him.