Khan has had problems with his chin throughout his amateur and professional career, he is a skilled boxer and I think if he had a better chin he would have a great chance, but unfortunately there is no training you can do to improve your chin, as soon as he faces a decent fighter with a big punch he will be in trouble. Gomez is well past it and was hardly a world beater at his best, but I think for the first 2 round he has the potential to give Khan problems. He will be exposed when he steps up in class.