DETROIT (AP) The Detroit Lions have left receiver Titus Young inactive. Detroit haven't put Young in the lineup Sunday against Indianapolis after allowing him to practice. He was sent away from the team for more than a week because of his behavior against Green Bay on Nov. 18, and was deactivated for the team's last game against Houston on Thanksgiving. The Lions will start left tackle Jeff Backus after he missed the previous game with a hamstring injury, ending his 186-game starting streak. Indianapolis rookie tight end Coby Fleener and cornerback Vontae Davis are healthy enough to start after missing four games with shoulder and knee injuries, respectively. Colts linebacker Tom Zbikowski is being replaced by Joe Lefeged. Zbikowski was previously ruled out with a knee injury.