Williams will start game two of Saturday's doubleheader against the Reds, Adam Berry of MLB.com reports.
After a successful debut, Williams was knocked around a bit by the Reds in his second outing, giving up three runs in an inning of relief. Despite the shaky appearance, the 24-year-old will garner a spot start Saturday for the nightcap, although he'll have to pitch better than he did in his first crack at Cincinnati if he wants to be successful.