I might jinx myself by saying this, but this might be the easiest under that we see all year. Romo and his line are banged up and the Chiefs are favored at home. People expect Andy Reid's offense to put up a lot of points but they underestimate how much of that offense is ball control and short passing. People also still do not realize how good and aggressive the Chiefs defense is.
Unders in home games when the Chiefs are favorites is going to be an angle to look out for this year. Especially if Andy Reid's offense can put up a lot of points. People will underestimate how much the Chiefs will adjust and become more ball control and defense once they get leads at home.