Andrew Luck finally reveals why he walked away from the NFL - ESPN
Few quarterbacks have started hotter than Colts' Andrew Luck
What happened to Andrew Luck? Our new series goes inside his rise, shocking retirement - The Athletic
Pain and Resentment and the Inspiring Retirement of Andrew Luck
Indianapolis QB Andrew Luck announces retirement due to lingering injuries
Former Colts Quarterback Andrew Luck Tells His Story to ESPN - Stampede Blue
Colts QB Andrew Luck finally playing up to hype, NFL News, Rankings and Statistics
Colts QB Andrew Luck announces his retirement - The Boston Globe
Coach says Colts' Andrew Luck 'doing great' after injury-marred 2015