Colts Open as 1.5 Point Favorites at Tennessee
 

This according to ESPN. Most of the online sportsbooks aren't providing odds yet due to the uncertainty surrounding Marcus Mariota.

The Texans, incidentally, are currently 7 point favorites at home against JAX

Gabbert had some nice throws against Washington. I’m more concerned with the availability of Kelly, Ebron, Moore, and Wilson.

Didn't Moore and Wilson come back in the Giants game after their injuries?

I believe that Jurrell Casey will be out for the Tits.

There is a big part of me that believes that the defense will play better vs Marriotta than Gabbert.

Casey was IRed so definitely out.

Colts roll off 35 unanswered and win going away 45-10, no matter who plays.

Mehh...

Point spreads are just Vegas' way to get equal action on both sides and not at all a prediction of who the experts think will win.

But in my non-expert opinion, this will be a low-scoring game with a final score somewhere in the 17-13 range.

Colts -3.5 right now

Yep, I'm guessing the spread is moving in our direction because Mariota didn't practice yesterday.

You're correct that Las Vegas ideally wants equally weighted action on both sides of a game, but don't discount the predictive value of the spread.

As a purely statistical matter, a team with a 3.5 point spread in its favor will win the game roughly 2/3 of the time (though it may not cover the spread). No guarantees, of course, but it's always nice to have the spread in your favor.