Luke is uncertain to return to Saturday's game against Washington State since he's going through concussion protocol, AJ Scott of Fresno Sports Magazine reports.
Analysis:Luke left the game in the first quarter after landing on his head following a tackle, and the fact that he's on the concussion protocol is far from encouraging. If he doesn't return, Julius Gillick and Tariq Thomas should be in line for more touches in the backfield behind starter Bryson Donelson.
