Colts Out Of Luck As Star QB Retires.

The Colts symbolic horseshoe is traditionally the symbol of luck, but it did seem to help the fortunes of their star quarterback who carries that name.  Andrew Luck,  whom the Colts drafted number one out of Stanford, retired suddenly after 7 mostly injury prone seasons.
Although he lead the Colts to the playoffs each year, in his first three seasons, he never attained the superstar status of his predecessor with the team, Peyton Manning.
The Colts in fact, cut Manning after his absence due to injuries, allowed the team a high enough pick to draft Luck, seen as the top quarterback in that year's class.
Maybe, keeping Manning around and letting Luck observe and learn from a future Hall Of Fame QB would have been the better choice.