DENVER, CO – SEPTEMBER 13: Quarterback Peyton Manning #18 of the Denver Broncos walks off the field after a game at Sports Authority Field at Mile High on September 13, 2015 in Denver, Colorado. (Photo by Doug Pensinger/Getty Images)
DENVER, CO – SEPTEMBER 13: Quarterback Peyton Manning #18 of the Denver Broncos walks off the field after a game at Sports Authority Field at Mile High on September 13, 2015 in Denver, Colorado. (Photo by Doug Pensinger/Getty Images)