More than 9,000 people didn't show up to the game at Broncos Stadium at Mile High on Sunday.

DENVER – It wasn’t the Broncos’ fans who booed.

It was the 9,131 who didn’t show up to boo that may be more troubling to Broncos’ management.

The frustrated fans who boo at least showed they care. Apathy is worse. The last time this many people failed to show up to watch the Broncos play a home game was against the St. Louis Rams in 2010.

Josh McDaniels didn’t make it through that season as the Broncos’ head coach. Vance Joseph may now be on high alert as the Broncos play at Arizona this Thursday.

Bronco fans let Joseph, Broncos quarterback Case Keenum and the team as a whole feel their wrath Sunday.

“I’ve never attacked the Denver Bronco fan base,’’ said pass rusher Von Miller. “They’ve been through thick and thin with me. Loyal as heck. I just can’t believe that guys are losing hope right now. We’ve still got a long season to go. We’ve got real fans here. If fans are losing hope, I just can’t believe that.’’

It’s a long season, but it’s no longer early. In fact, it’s now too late for the Broncos to finish 13-3.

The Broncos lost eight in a row on their way to a 5-11 record in Joseph’s first season of 2017. They have now lost four in a row to drop to 2-4 this year.

The Broncos have not had back-to-back losing seasons since 1971-72.

Their once vaunted defense is now atrocious. Historically bad. The Broncos are the first team since the 1978 Buffalo Bills to give up at least 270 rushing yards in back-to-back games.

Here’s the evil topper: The Broncos just became the first team in NFL history to allow a 200-yard individual rusher in back-to-back games. FIRST TIME EVER.

Isaiah Crowell and then Todd Gurley II. Arizona’s David Johnson can’t wait for Thursday’s game.