The Texans came through for me last week and I like them to do it again this week. Give an expansion team confidence and they just might forget they aren't supposed to win games!
Baltimore is scoring just 19.2 points per game and a solit Texan defense should be able to keep Baltimore on the south side of that average. The Ravens passing game (ranked 31st in the league) should especially struggle against Houston's pass D (ranked 10th).
Houston is 4-1 as a home dog this year and I expect them to keep this one close.