Isn't an excuse for Diaz but he was handed a terrible QB room by Richt. It looked like Williams didn't even bother to watch a minute of film. I think Perry was still working for BangBus and had his mind on other things and then Martell was a headcase. Richt Jr. f#cked Diaz royally with his horrendous QB recruiting. This is why I disagree when people say if Richt had been healthy he'd have built a good program. Nope- not as long as Richt jr. was picking and coaching QBs.
Credit where credit is due, Diaz left Cristobal one of the better QB rooms in the country.