Turnover differential: Texans plus-10, Colts plus-2.
RB Joe Mixon and WR Stefon Diggs. The Texans won the division - and a playoff game - last season with rookie QB C.J. Stroud. So Houston added two new potential stars - Mixon, who had four 1,000-yard seasons with Cincinnati, and Diggs, who has four straight 100-catch seasons. Sunday will be the Texans' first real glimpse into how they all fit into this offense.
QB Anthony Richardson. Injuries limited him to only four games before undergoing season-ending surgery last October. Fans haven't seen much of Richardson since. He only played two series in the preseason opener and 1 1/2 quarters in the preseason finale. But everyone wants to see if Richardson improves his accuracy, whether he can stay healthy and how he’ll work together with RB Jonathan Taylor in the backfield.
Stroud against Indy's secondary. A year ago, the Colts young, inexperienced secondary got exposed for what it was - a youth movement. Indy general manager Chris Ballard didn't bring in much veteran help during the offseason, opting instead to see whether a full offseason would help these young players grow into their roles. Expect Stroud, Diggs & Co. to test Indy early and often.
Houston listed just one player on its injury report, safety M.J. Stewart with a knee injury that kept him off the practice field Wednesday. … Indy listed only two players, kicker Matt Gay with a hernia and slot receiver Josh Downs, who has been out with an ankle injury since getting hurt in a training camp collision.