Peyton Manning on retirement: 18 is a good number
Peyton Manning to retire after 18 NFL seasons, five MVPs, two titles
Peyton Manning Expected to Say He's Leaving the N.F.L. - The New
Peyton Manning to retire after 18 seasons in NFL
How Old Was Peyton Manning When He Retired? Delving into His
Peyton Manning says goodbye to the NFL after 18 years — VIDEO
Colts to construct Peyton Manning statue, retire No. 18 jersey
Peyton Manning to retire after 18 NFL seasons – Orange County Register
Peyton Manning retires from football after 18 NFL seasons – The
Peyton Manning to retire after 18 NFL seasons – Orange County Register
Peyton Manning retires from NFL after 18 seasons
Peyton Manning retires: After 18 years, it's time
Peyton Manning to Retire After 18 Seasons in NFL - WSJ
Peyton Manning to retire after 18 NFL seasons – Orange County Register
AP Source: Peyton Manning to retire after 18 NFL seasons