ENGLEWOOD, Colo. -- The Denver Broncos have not beaten the Chiefs since Sept. 17, 2015, when Peyton Manning helped them overcome a 14-0 deficit to win, 31-24, but they will get another shot on Sunday (4:05 p.m. ET, CBS).

The numbers are staggering. The Chiefs (9-3) have won the last 13 games between the two teams, the longest win streak by either team in the rivalry that dates back to the first day of the American Football League in 1960.

“(It’s) very personal, very personal,’’ said guard Dalton Risner. “ … We may be 3-9 right now, but as football players, as a football team, as an organization, you can’t worry about that. You’ve got to be focused on beating the Chiefs. It’s been a good amount of years since we beat these guys, but this one’s personal."

The first rumblings of the still-ongoing football storm ahead for the Broncos could be heard in the first Chiefs' win of the current streak -- a 29-13 victory in Denver when Manning completed just five passes, threw four interceptions and was removed from the game by coach Gary Kubiak when it was clear Manning’s foot injury was too much for the future Hall of Famer to play through.

It's a football rivalry that has become so one-sided, it even got to the perpetually positive Von Miller, who once lamented, “it just defeats my soul."

“I try not to look at a lot of stuff in the past … at this point of the year it would feel so great to get a win and obviously against the Chiefs,’’ said safety Justin Simmons. “ ... This win would absolutely mean everything.’’

Denver has never won a game Patrick Mahomes has started at quarterback for the Chiefs, including Mahomes’ first career start, a 27-24 Chiefs win in the 2017 season finale. The Broncos have scored fewer than 20 points in eight of the 13 losses and fewer than 14 points in seven of the losses.

“[Mahomes] is an electric football player,’’ said Broncos coach Nathaniel Hackett. “And they’ve got a lot of electric football players around him.’’

Since the Broncos’ last win over the Chiefs, Mahomes has gone on to become league MVP, Super Bowl MVP and perpetually resides at the top of most major statistical categories. He enters Sunday’s game against the Broncos as the league’s top passer with 3,808 yards and No. 1 in the league with 30 touchdown passes.

And in the category of tallest of orders the Broncos bring the league’s lowest-scoring offense at 13.8 points per game into Sunday's affair, an offense currently on pace, in terms of points per game, to be the lowest-scoring offense in franchise history. By stark contrast, the Chiefs will roll into Denver with the NFL’s top-scoring offense at 29.2 points per game.

“The great thing about football is it’s not about the past, it’s about the present,’’ said Broncos quarterback Russell Wilson. “ … It definitely matters to us, we have to set the tone early and often … they do a really good job making their plays and we have to too.’’