HOUSTON - Houston coach Gary Kubiak collapsed leaving the field at halftime of the Texans' game Sunday night against Indianapolis and was taken by ambulance to a hospital.
Kubiak hunched over and dropped to his knees at the 24-yard line and was immediately surrounded by medical personnel. He was lifted off the field on a stretcher and taken by cart to the ambulance.
The Texans didn't say what was wrong with Kubiak, but did say he didn't have a heart attack. The team said the 52-year-old coach, a former NFL quarterback who calls the team's plays, was conscious and was with his family as he was taken to the hospital.
Defensive coordinator Wade Phillips took over as coach. Up 21-3 when Kubiak collapsed, the Texans unraveled in the second half, falling 27-24 for their sixth straight loss after opening 2-0 with Super Bowl hopes.
Kubiak has long been known as a top offensive coach, mentoring quarterbacks in Denver under Mike Shanahan and now Matt Schaub - and Case Keenum - in Houston. Kubiak has had no known public health problems.
Kubiak was hired in 2006, along with general manager Rick Smith, after the Texans finished a franchise-worst 2-14. Smith spent 10 years with Kubiak while the coach was offensive coordinator of the Broncos. Smith was Denver's defensive assistant for four seasons before moving into the front office for his last six years with the Broncos.