Chase was on the verge of tears. Despite one of Javier's key resources, he felt like nothing more than a pawn for the Hernandezes. If he lacked his martial arts skills, would Javier even give him a second thought?
Furthermore, the Hernandezes had gone to great lengths to rebuild their reputation in King City's underworld with Chase.
Even Tiger, whom not even Scar could handle in Salt City, had met his match with Chase. If Chase backed out now, wouldn't it be a stain on the Hernandezes' honor?