Why did Andrew Luck abruptly retire?
Andrew Luck finally reveals why he walked away from the NFL - ESPN
Andrew Luck is big on brawn, even bigger on brain – The Mercury News
Luck retires, calls decision 'hardest of my life' - ESPN
ESPN apologizes for using 'Dixie' in Andrew Luck graphic during
Don't boo Andrew Luck: The man has perspective
Andrew Luck retirement: ESPN writer discusses former Colts quarterback
Luck retires, calls decision 'hardest of my life' - ESPN
Andrew Luck is big on brawn, even bigger on brain – The Mercury News