Arian Foster is ahead of schedule in his recovery, according to head coach Bill O'Brien.
"Arian is doing well," O'Brien said Monday. "Relative to the injury that he has and prognosis early on, I would say he's ahead of that."
Although there's no official date for his return, O'Brien remains cautiously optimistic. Foster has not practiced since suffering a groin injury during training camp on August 3.
"Like I always say to people, I reserve the right to change my mind," O'Brien said. "But as it stands today, I believe that he's really working hard to get back. He's a very hard-working guy in that training room and I think he'll be back sooner rather than later, relative to what the early prognosis was."
Foster, who did not play during preseason, is expected to miss time during the regular season while undergoing rehab at NRG Stadium.
The Texans open the regular season at home against Kansas City. Kickoff is scheduled for Sunday at noon CT.