HOUSTON – Houston coach Gary Kubiak collapsed leaving the field at halftime and was taken by ambulance to a hospital, and the Indianapolis Colts rallied for a 27-24 victory over the Texans on Sunday night.

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 gurney 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 was conscious and was with his family as he was taken to the hospital.

Andrew Luck got off to a slow start before throwing three second-half touchdowns to T.Y. Hilton to overcome an 18-point halftime deficit and give the AFC-South-leading Colts (6-2) the victory.

Case Keenum threw for 350 yards and three touchdowns in his second career start, but had trouble moving the offence after halftime as the Texans, up 21-3 when Kubiak collapsed, lost their sixth straight game after opening the season 2-0 with Super Bowl hopes.

Houston had a chance to tie it, but Randy Bullock’s 55-yard field goal attempt as time expired sailed wide left.