JACKSONVILLE, Fla. -- A lot of things can happen in one day. Apparently, the Jacksonville Jaguars becoming the best team in the AFC South is one of them.

According to ESPN's Football Power Index, the Jaguars' 29-7 victory over the Houston Texans on Sunday, coupled with losses by Tennessee and Indianapolis, means they're now the favorite to win the division. The FPI gives the Jaguars a 54.9 percent chance to win the division and a 63.4 percent chance of making the playoffs.

Just one week into the season and those numbers are significantly better than they were in the preseason. In fact, more than 25 times better in one case. The preseason FPI gave the Jaguars a 10.9 percent chance to win the division and a 2.4 percent chance to make the playoffs.

The FPI also now predicts the Jaguars to go 9-7, two victories better than their preseason prediction.

That's what a dominating defensive performance can do. The Jaguars held the Texans to 203 yards, racked up a franchise-record 10 sacks (including a franchise-record 4.0 by Calais Campbell), and forced four turnovers (including one returned for a TD). The Texans benched starting quarterback Tom Savage at halftime, but rookie Deshaun Watson only managed to lead the offense to one touchdown.

Tennessee lost at home to Oakland, 26-16, and the Titans managed only one touchdown and three field goals. It wasn't a devastating loss, but it put the Titans in a tough spot heading into this Sunday's game at Jacksonville. Lose to the Jaguars in EverBank Field and they'll be two games behind the Jaguars and have games against Seattle, Houston and Miami -- all playoff teams last year -- in the following weeks.

The Colts were embarrassed, 46-9, by the Los Angeles Rams. They're without quarterback Andrew Luck because of a shoulder injury and nobody is quite sure when he will be able to play. In the meantime, coach Chuck Pagano has to choose between Scott Tolzien and Jacoby Brissett as his starter. Brissett was acquired from New England in a trade just before the regular season began.

The Jaguars sit alone atop the division standings and it's the first time the franchise has had a winning record since they opened the 2011 season by beating Tennessee. The last time the Jaguars began a season 2-0 was 2006 when they opened with victories over Dallas and Pittsburgh.