Williams Jr. (ribs) won't start Friday at Purdue, Pete Thamel of ESPN.com reports.
Analysis:Williams Jr. has been nursing a rib injury and won't get the nod Friday, so Elijah Brown, who has been working with the first-team offense all week, will be under center. Williams Jr. could be available as a reserve, but according to Pete Thamel of ESPN.com, that'll depend on how he feels in the pre-game warmups.