The White Sox are looking into contract extensions for Lucas Giolito and Andrew Vaughn. Giolito is their ace and i's in their best interest to extend him sooner rather than later because another strong season will make his price tag jump. Vaughn hasn't yet played in the Majors, but the White Sox are no strangers to locking in deals for top prospects - as they did for Eloy Jimenez and Luis Robert over the past two years.