Peyton Manning will announce his retirement after 18 years during a news conference Monday at the Denver Broncos headquarters, a source familiar with the quarterback's decision told ESPN's Chris Mortensen.<br />The Broncos' Super Bowl 50 victory over the Carolina Panthers was indeed his last rodeo.<br />Manning, who played 14 seasons with the Indianapolis Colts, was a first-ballot Hall of Famer-in-waiting before spinal fusion surgery caused him to miss the 2011 season.<br />He went to the Broncos as a free agent in 2012 and authored the most prolific season of any quarterback in history in 2013.<br />The Broncos made two Super Bowl trips in Manning's final three seasons.
