Peyton Manning to retire after 18 NFL seasons

ENGLEWOOD, Colo. (AP) — The Denver Broncos are confirming that Peyton Manning is retiring after 18 seasons in the NFL. A month after Denver’s victory over the Carolina Panthers in Super Bowl 50, the nearly 40-year-old quarterback has informed Broncos general manager John Elway he’s calling it a career. Manning is going out just as…