The Kansas City Chiefs (10-1) host the Denver Broncos (4-7) in an AFC West matchup on Sunday Night Football. Kickoff is scheduled for 8:20 p.m. ET at Arrowhead Stadium.

William Hill Sportsbook lists Kansas City as a 13-point favorite in its latest Broncos vs. Chiefs odds, while the over-under for total points scored is 51. Before making any Broncos vs. Chiefs picks or NFL predictions, you NEED to check out what SportsLine's resident Chiefs expert, Larry Hartstein, has to say.

A former lead writer for Covers and The Linemakers, Hartstein combines a vast network of Vegas sources with an analytical approach he honed while working for Pro Football Focus. He nailed 60 percent of his NFL against-the-spread picks last year, and he's been uncanny when it comes to the Chiefs.

Over his last 14 spread picks for or against K.C., Hartstein has been right an incredible 12 times! That includes last week when he faded the Chiefs at Tampa Bay. The result: The Buccaneers covered 3.5 points in a 27-24 loss, and anyone who followed Hartstein cashed in.

On Sunday Night Football, we can tell you Hartstein is leaning Over the total, but his much stronger play is on the spread. In fact, Hartstein has found a crucial X-factor that has him going BIG on one side of the spread! You ABSOLUTELY need to see it before locking in your own picks.

Who wins Broncos vs. Chiefs on Sunday Night Football? And what crucial X-factor makes one side of the spread a MUST-BACK? ... Join SportsLine right now to see which side of the Broncos vs. Chiefs spread you need to back Sunday night, all from the acclaimed expert who's an astounding 12-2 on picks involving the Chiefs!