- "After 18 years, it's time," Peyton Manning says in retirement news conference
- Colleagues and on-field foes offer insight into quarterback who "made the game better"
- Manning, the No. 1 overall draft pick in 1998, set numerous records over 18 seasons
(CNN)Peyton Manning bid an emotional farewell to football Monday, retiring after 18 game-changing years that left him among the game's elite.