Has he had any playing time this year? Due to his age, I would expect that he would be ready to play early, no redshirt
Why would R. Dixon need a medical redshirt?
Doesn't have to be a severe injury if he's never redshirted before. They just have to prove the injury forced him to miss time and he didn't play after the first 3 or 4 games.
Who is Antonio Gates? You might be thinking of Antonio Harper.
The injury must be incapacitating. That means it must be a season ending injury. (Severe)