Watch Live: Peyton Manning to announce retirement

Peyton Manning holds up the Vince Lombardi trophy after winning Super Bowl 50. (Marcio Jose Sanchez/AP)

Denver Broncos quarterback Peyton Manning is calling it a career after 18 seasons in the NFL.

The 39-year-old, who is fresh off a Super Bowl victory with the Broncos, will make a formal announcement on Monday afternoon. Catch the press conference live on Sportsnet and right here on at 1:00 p.m. ET / 10:00 a.m. PT.

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