We speculated about this during the game, but the turf at Levi's stadium WAS bad.
http://www.packersnews.com/story/spo...tion/89476046/According to one observer, the turf at Levi’s Stadium was loose and coming up and might have been the reason for both teams suffering multiple muscle-pull injuries.
Crockett-shoulder
Elliot-hamstring
Banjo-hamstring
Dorleant-hanstring (second of camp, said this one is different)
Springs-finger (came into game with injury, got worse in game, staff put him in club)