Quillen doesn't make weight, bout is a non title fight

[Ron Swanson]

Why has Danny performed so poorly in every fight since the Lucas fight.

I think his performance dropped off with the Herrera fight. That fight showed that a fast, clever boxer/puncher gives Garcia fits.
Peterson wins a rematch in my opinion. He came close last night, even though his fight plan was wrong.

I really think he may benefit from a new trainer. I think his father did a good job getting him where he is but he needs a fresh approach. If his opponents aren't fighting a certain way he seems lost

I don't think it does him much good. He is slow and stiff. Slow one punch fighters don't usually get far. He's done well with what he has by sticking to a gameplan(which you have to credit the corner for) and superb timing. But if he doesn't time a guy he struggles. That's why Peterson came in with a plan to use multiple attacks. If you don't Garcia will time you eventually.