Texans coach Gary Kubiak was in stable condition after he collapsed leaving the field at halftime of Houston's 27-24 loss to Indianapolis on Sunday night. Now the reeling Texans, losers of six straight, are left to worry about their coach and wonder when he'll return to the team. "There was a lot of unknown," said defensive coordinator Wade Phillips, who coached the team after halftime. Everything was unknown as to what was going on and what happened to Kube. Kubiak hunched over and dropped to his knees at the 24-yard line and was immediately surrounded by medical personnel. "It's on your mind when you're out there playing," receiver Andre Johnson said. But you try to focus on the game and just go out and do your job. We have to assess ... obviously, there's a lot of info. Hopefully, Gary will be back with us tomorrow. Up 21-3 when Kubiak collapsed, the Texans struggled after halftime for their sixth straight loss after opening the season 2-0 with Super Bowl hopes. Veteran safety Ed Reed didn't want to blame the loss on what happened to Kubiak. "I thought we dealt with it well," Reed said. We've just got to finish. Kubiak's collapse came a day after Denver Broncos coach John Fox was hospitalized in North Carolina as he awaits aortic valve replacement surgery. As part of his trip to North Carolina on a bye week, he met with his cardiologist in Raleigh and was told to seek medical attention immediately if he felt any discomfort. In college, Minnesota coach Jerry Kill took a leave of absence last month so he could better manage and treat his epilepsy. He has had five seizures on game day in his two-plus seasons with the Golden Gophers.