Andrew Luck threw two touchdown passes, the Colts defense picked off Matt Schaub twice, and Indy (11-5) took down the visiting Texans (12-4) by a 28-16 margin, providing the Broncos with a chance to claim homefield advantage throughout the AFC playoffs with a win or tie today against the Chiefs.
As recently as four weeks ago, Houston, at 11-1, had what was essentially a 2.5-game lead on the 9-3 Broncos in the AFC standings, given their Week 3 win in Denver. But they've lost three of four down the stretch - at New England in Week 14, in Houston last week against the Vikings, and today at Indy.
New England can also leapfrog Houston and into the number-two seed with a home win over Miami.
It's a stunning collapse for the Texans, who have gone from early-season Super Bowl favorites, to prohibitive AFC leaders, to likely three seeds without a bye.