No Clark tonight:

Ryan Wood@ByRyanWood
#Packers 1st-round rookie DT Kenny Clark (back) did not travel with the team to San Francisco. Will miss third preseason exhibition.

Tom Silverstein ‏@TomSilverstein 1m1 minute ago
#Packers inactives: Hundley, Ripkowski, Burnett, Ryan, Joe Thomas, Flores, Linsley, J. Walker, Janis, Henry, Nelson, Clark, Guion.