The Detroit Lions and Chicago Bears showed their coaches the door. Bruce Arians of the Arizona Cardinals found it himself. And Vance Joseph of the Broncos remained gainfully employed despite enduring the sort of season that doesn’t go down well in Denver.

What is traditionally the NFL’s biggest day for firings, “Black Monday,” started with a flurry when Detroit canned Jim Caldwell and Chicago did the same to John Fox.

“Today is the tough part of our results-oriented business,” said Fox, whose team went 14-34 and finished last in all three of his seasons in Chicago.

He and Caldwell, who went 36-28 in four seasons but didn’t win a playoff game, joined Jack Del Rio of the Raiders and Chuck Pagano of the Colts, whose owners didn’t even wait until the calendar turned, choosing to sack them after their games Sunday.

But that was it.

Arians, who has had health problems, including a bout with kidney cancer, announced he was leaving Arizona, though that was widely expected.

In a teary news conference, the 65-year-old Arians called his stay in Arizona, which included 49 victories over five seasons, “a great ride.” Sporting his trademark cap and toying with his grey goatee, Arians said an eye opener came over the summer when his wife told him his son, Jake, was soon to turn 40.

“It hit me like a ton of bricks, that I missed all that time,” Arians said. “That’s the culture. I probably wouldn’t change anything.”

Joseph, a rookie head coach who oversaw a 5-11 season that included an eight-game losing streak, was on the hot seat. But his boss, John Elway, slept on it and decided to keep Joseph and not begin a search for the team’s fourth coach in five years.

“We believe in Vance as our head coach,” Elway tweeted. “Together, we’ll put in the work to improve in all areas and win in 2018.”

The Marvin Lewis situation in Cincinnati – well, it’s complicated. Lewis completed his 15th season with the Bengals and might not be asked to return. He met with owner Mike Brown on Monday, but no conclusions were reached. Lewis said the decision was more complicated than management simply asking him back, and that the owner and the front office need to be on the same page.

Maybe most intriguing for the coaching vacancies is the prospect of Jon Gruden leaving the broadcasting booth and returning to the Raiders. ESPN reported that Raiders owner Mark Davis is trying to lure Gruden back to the sideline with an offer that could include an ownership stake.