Peyton Manning to retire after 18 seasons in NFL
Peyton Manning retires from football: “I love the game… I will miss it.” – The Denver Post
Peyton Manning retires: After 18 years, it's time
Peyton Manning to retire after 18 NFL seasons
So Long, Sheriff Peyton Manning Retirement Special Sports Illustrated Cover by Sports Illustrated
AP Source: Peyton Manning returning for 18th NFL season
After 18 seasons, Peyton Manning to retire
Peyton Manning to retire after Super Bowl finish to 18-year NFL career
Peyton Manning retires after 18 seasons