While Arkansas coach John L. Smith says quarterback Tyler Wilson is a game-time decision for Saturday against No. 1-ranked Alabama, sources told ESPN.com he will not play.

"There will be no further update on Tyler Wilson's status today," Smith said in a statement Friday.

Wilson took a shot to the head and was knocked out of the game on Saturday in a 34-31 overtime loss to Louisiana-Monroe.

He'd been listed as questionable all week. But the decision was made that he wouldn't play after he underwent additional testing on Thursday, sources said.

Arkansas radio personality Bo Mattingly first reported Friday that Wilson wouldn't play against Alabama.

Wilson, a first-team All-SEC selection last season, didn't practice with the team on Thursday after practicing on Wednesday. Smith had said Wilson was being "evaluated" and that he expected something to be decided by Friday morning.

This is not the first time Wilson has battled a head injury. He suffered a concussion in the second week last season but came back and played the next week.