sentences:  During his tenure with the Texans, the team ranked eighth in the NFL in total defense (329 .4 ypg) and third in the league in opponent third-down percentage (35.9).Kollar’s unit adjusted to the defense’s transition to a 3-4 scheme in 2011 under Houston Defensive Coordinator Wade Phillips.The Texans went on to post the third-largest defensive turnaround (-91.2 ypg) in NFL history in 2011.