Make that a 57.2 QB rating against a team that gives up 310 yards a game through the air. Meanwhile KC opponents average 176.1 which is the 2nd fewest in the league.
On the plus side, the run defense continues to be solid. SD with 10 carries for 29 yards. On the negative side, they're completely useless against the pass. Herbert is 15/16 for 142 yards and a TD.