Croom may have signed him, but he has absolutely nothing to do with what he has become. Dan and staff have pushed him and challenged him, and Chris has found a way to meet those challenges. The worst coast offense Croom ran would have been terrible for him. This spread option with a run mentality is perfect for Chris, and I think he enjoys playing for a guy like Dan in this system.
QB's can have all the talent in world, but if they have a terrible staff to work under, they won't reach their full potential. Dan has gotten Relf to reach his full potential, and he is reaping the benefits of that by beingconsidered one of the more talentedQB's in the SEC this year.