Antonio Gates doubtful vs. Texans

San Diego Chargers tight end Antonio Gates' toe injury worsened this week and he's doubtful for Sunday's game against the Houston Texans.

Gates has been playing with the toe injury but this week must have had some setbacks. Also doubtful are wide receivers Legedu Naanee and Malcolm Floyd, who both have hamstring injuries.

Kicker Nate Kaeding is out with a groin injury. Linebacker Brandon Siler is doubtful with a foot injury. Linebacker Larry English is questionable with a foot problem. Wide receiver Richard Goodman is questionable with a hamstring injury.

John Clayton is a senior writer for ESPN.com.