The 49ers have already lost LG Alex Boone with a knee injury. He has been listed as out for the remainder of the game.
Kendall Gaskins being evaluated for a concussion; Boone is declared out for the game.
— Matt Barrows (@mattbarrows) December 13, 2015
49ers injury update: Special-teamer Kendall Gaskins is being evaluated for a possible concussion.
— Matt Maiocco (@MaioccoCSN) December 13, 2015