Former Indianapolis Colts' quarterback Andrew Luck still has guilt about how his NFL career ended with the team. “I’ll always have guilt about how it ended,” Luck said in an interview with Zak Keefer of The Athletic. “I let my teammates down.”

Although Luck acknowledged that he still feels guilty about the end of his Colts tenure, he's fully embraced his new role with the Cardinal.

Andrew Luck shocked the NFL world six years ago by retiring from professional football at the age of 30. Six years later, Luck is reflecting on his decision. The former No. 1 overall NFL Draft pick, who starred at Stanford before playing in the league for the Indianapolis Colts,