Andrew Luck finally reveals why he walked away from the NFL - ESPN
Andrew Luck shares regret of retirement announcement to ESPN
What happened to Andrew Luck? Our new series goes inside his rise, shocking retirement - The Athletic
Andrew Luck Retiring From NFL
Andrew Luck salary: What is the Colts' quarterback giving up by retiring
Stadium - BREAKING: Colts quarterback Andrew Luck is
Andrew Luck's Retirement: Why Did Colts' QB Quit the NFL?
Andrew Luck retirement: Life, future outside football - Sports Illustrated
Former No. 1 Draft Pick Andrew Luck Returns to Football World in Coaching Role, Sports-illustrated