Broncos seek upset as Mahomes returns in MNF showdown

Patrick Mahomes returns from an ACL tear as the Kansas City Chiefs host division rival Denver Broncos in Week 1's Monday Night Football at Arrowhead (ESPN/ABC, 8:15 p.m. ET). KC adds Kenneth Walker III and Jaylen Waddle to boost a revamped offense, while Denver leans on Bo Nix and a strong defense under Sean Payton. The Chiefs are listed as -2.5 favorites with an over/under of 43.5; KC's left tackle Josh Simmons is out, Jonathan Cooper is on the exempt list for Denver, and rookies Mansoor Delane, Peter Woods and R Mason Thomas headline KC's defense. CBS Sports projects a narrow Broncos upset, 21-20.