Best Case/Worst Case For AFC South

Based on the first four games of the season, I wanted to make a Hypothesis for what could happen if all goes right for each team and what happens is all goes to hell and see how the division will shake out.

Texans

game	Best Case	Worst Case
Indy 1	WIN!!
Washington	WIN!!
Dallas	Loss
Oakland	WIN!!
NY Giants	Win	Loss
KC	Win	Win
@Indy	Loss	Loss
SD	Win	Loss
@Jax	Win	Win
@Jets	Loss	Loss
Tenn	Win	Loss
@Phi	Win	Loss
Bal	Loss	Loss
@Ten	Win	Loss
@Den	Win	Loss
Jax	Win	Win
Record	12-4	6-10

This got a lot longer than I thought it would (that's what she said.) So I'll do other ones for Indy, Jax and Tenn. What do you guys think? Are any of these games definite losses or definitely in the bag for us?