I agree with the above statements that "Gonzo is a strong kid", but I have heard he has some knee issue, and the word is that Harris is Maddox's boy, and he moved Roberson to right guard and put Gonzo at left guard, behind Harris. He (Gonzo) will likely not even have the opportunity to play, as long as he is behind Harris.
Just like Larkin says, Maddox plays who he wants regardless of their merit, and even contradicts the "grades" that he uses to evaluate the players in the scrimmages.