HOUSTON (AP) — Andre Johnson stood in Houston’s locker room after the first practice without his hospitalized coach and wondered aloud whether the Texans’ freefall this season could have contributed to Gary Kubiak’s health problems.

“I think it’s a lot of stress and stuff that definitely comes with it, especially because of the season we’re having,” Johnson said. “That could have played a part in it, but you never know.”

The Texans are trying to pick up the pieces in a season that started with so much promise. Houston was expected to contend for a Super Bowl this season and started 2-0 before losing six straight games, struggling with injuries and bad play. The Texans blew an 18-point lead Sunday night against the Colts before falling 27-24.

By the time the game ended, the 52-year-old Kubiak was in a Houston hospital. He collapsed on the field at halftime, appearing to wince in pain before he was put on a stretcher and hustled to an ambulance. Kubiak will remain hospitalized until at least today, the team said. The Texans have not released what’s wrong with Kubiak, saying only that he experienced “dizziness and a light-headed feeling.”