NFL's Andrew Luck retiring: How much money he made, could be giving up
Andrew Luck retires ahead of 2019 season - The Phinsider
Andrew Luck retirement: Life, future outside football - Sports Illustrated
Andrew Luck Got Wise, but Fans Weren't Keeping Up - The Atlantic
Colts QB Andrew Luck to retire after latest injury, is 'mentally worn down'
Andrew Luck's life was always about more than football
Andrew Luck Walked Away From $58 Million, but That's Not Necessarily Bad - The New York Times
Schefter: Andrew Luck is retiring from the NFL - Music City Miracles
NFL - BREAKING: Andrew Luck has informed the Indianapolis Colts he is retiring. (via Tom Pelissero)
NFL: Andrew Luck returns to familiar football territory
Mind-Boggling Stats: Andrew Luck's career timeline, highlights