Pain and Resentment and the Inspiring Retirement of Andrew Luck
Doyel: Colts QB Andrew Luck shocks world by retiring, and for his sake I hope he's right
Why did Andrew Luck retire? QB explains shocking decision: 'I haven't been able to live the life I want to live'
Andrew Luck retires: Why did Andrew Luck quit
Andrew Luck Hears 'Boos' As He Leaves Field During Preseason Game After Announcing His Retirement
REACTION: Teammates, players react to Andrew Luck's retirement, Colts
Andrew Luck retiring from NFL: What we know about his decision - Sports Illustrated
Andrew Luck: The NFL's Most Perplexing Trash Talker - WSJ
Fans, Colts teammates react after Andrew Luck's shocking retirement announcement
In Andrew Luck's Retirement, Football's Consequences Weigh Heavily - The New York Times
Past Ubben Lectures - Andrew Luck - DePauw University