Oft-injured Colts QB Andrew Luck, 29, announces retirement
Like Andrew Luck, kids quit sports when the joy goes away - The Washington Post
Andrew Luck retirement: Life, future outside football - Sports Illustrated
Colts QB Andrew Luck announces his retirement
Andrew Luck: 10 defining moments as a Colt and a Hoosier
Colts quarterback Andrew Luck announces retirement
Catholic QB Andrew Luck leaves NFL in his prime
What Andrew Luck's Retirement Says About the NFL - The Atlantic
Colts owner issues 'hands-off' warning over retired QB Luck
Why did Andrew Luck retire? Colts QB's decision to end NFL career, explained
Andrew Luck shares regret of retirement announcement to ESPN