Houston coach Gary Kubiak collapsed at halftime and was taken by ambulance to a hospital, a chilling blow for the reeling Texans after their best start in months. Up 21-3 when Kubiak went down leaving the field at the break, the Texans unraveled in the second half, falling 27-24 to the Indianapolis Colts for their sixth straight loss after opening the season 2-0 with Super Bowl hopes. ''We were all very worried,'' quarterback Case Keenum said. The Texans didn't say what was wrong with Kubiak, but did say he didn't have a heart attack and he was in stable condition. More...