The Kansas City Chiefs were first in the NFL with just four rushing touchdowns allowed last season which would lead you to believe they had a good run defense. That would be wrong. The Chiefs run defense was not very good last season.
This year, they should be better.
First, Derrick Johnson and Mike DeVito are returning. Nothing against Josh Mauga, James-Michael Johnson and others who filled in at linebacker, but they're not Derrick Johnson. And DeVito, if he comes back fully from his Achilles injury, should strengthen the rotation.