Denver Broncos quarterback Peyton Manning, center, joins head coach Gary Kubiak, left, and team general manager John Elway after Manning's retirement announcement at team headquarters Monday, March 7, 2016, in Englewood, Colo. Manning, who has been in the NFL for the past 18 years, is retiring after winning five MVP trophies and two Super Bowl championships, the most recent last month against the Carolina Panthers. (AP Photo/David Zalubowski)

Denver Broncos quarterback Peyton Manning speaks during a news conference where he announced his retirement from professional football, in Englewood, Colo., Monday, March 7, 2016. Manning finished a record-breaking 18 year career by leading the Broncos to the team's Super Bowl 50 victory over the Carolina Panthers. (AP Photo/David Zalubowski)

Denver Broncos quarterback Peyton Manning speaks during his retirement announcement press conference at the UCHealth Training Center on March 7, 2016 in Englewood, Colo. (Ron Chenoy/USA TODAY Sports)

General view of a commemorative football and helmet before the press conference for the retirement of Denver Broncos quarterback Peyton Manning (not pictured) at the UCHealth Training Center on March 7, 2016 in Englewood, Colo. (Ron Chenoy/USA TODAY Sports)

Denver Broncos quarterback Peyton Manning looks on during a press conference to announce his retirement on Monday, March 7, 2016 in Englewood, Colo. (David Zalubowski/AP)

Denver Broncos quarterback Peyton Manning speaks during a news conference where he announced his retirement from professional football, in Englewood, Colo., Monday, March 7, 2016. Manning finished a record-breaking 18 year career by leading the Broncos to the team's Super Bowl 50 victory over the Carolina Panthers. (AP Photo/David Zalubowski)

Denver Broncos quarterback Peyton Manning, rear, hugs Broncos head coach Gary Kubiak during a news conference where Manning announced his retirement from professional football, in Englewood, Colo., Monday, March 7, 2016. Manning finished a record-breaking 18 year career by leading the Broncos to the team's Super Bowl 50 victory over the Carolina Panthers. (AP Photo/David Zalubowski)

General view before the press conference for the retirement of Denver Broncos quarterback Peyton Manning (not pictured) at the UCHealth Training Center on March 7, 2016 in Englewood, Colo. (Ron Chenoy/USA TODAY Sports)

Denver Broncos quarterback Peyton Manning, center, joins head coach Gary Kubak, left, and team general manager John Elway for a photo after Manning's retirement announcement at team headquarters Monday, March 7, 2016, in Englewood, Colo. Manning, who has been in the NFL for the past 18 years, is retiring after winning five MVP trophies and two Super Bowl championships, the most recent last month against the Carolina Panthers. (AP Photo/David Zalubowski)

Denver Broncos quarterback Peyton Manning speaks during his retirement announcement press conference at the UCHealth Training Center on March 7, 2016 in Englewood, Colo. (Ron Chenoy/USA TODAY Sports)

Denver Broncos general manager John Elway speaks during a retirement announcement for quarterback Peyton Manning at team headquarters Monday, March 7, 2016, in Englewood, Colo. Manning, who has been in the NFL for the past 18 years, is retiring after winning five MVP trophies and two Super Bowl championships, the most recent last month against the Carolina Panthers. (AP Photo/David Zalubowski)

Denver Broncos quarterback Peyton Manning struggles to speak during his retirement announcement at team headquarters Monday, March 7, 2016, in Englewood, Colo. Manning, who has been in the NFL for the past 18 years, is retiring after winning five MVP trophies and two Super Bowl championships, the most recent last month against the Carolina Panthers. (AP Photo/David Zalubowski)