Denver Broncos head coach Vance Joseph looks onto the field during an NFL football game against the Washington Redskins, Sunday, Dec. 24, 2017, in Landover, Maryland.

(AP Photo/Mark Tenally)

Needless to say, 2017 was a nightmarish season for fans of the Denver Broncos. The team finished with a 5-11 record, its first losing season since 2010. Even more alarming: The team that won the Super Bowl just two years ago missed the NFL playoffs for a second straight season.

Contrary to early speculation, first-year head coach Vance Joseph was retained. However, six of the team's assistant coaches were fired on Monday.

Channel 7 sports reporter Troy Renck spoke with Colorado Matters host Ryan Warner about the Broncos' 2017 season and an offseason that may be one of the most important in team history. He says there were many reasons for the losing campaign, including a revolving door at quarterback, with Trevor Siemian, Paxton Lynch and Brock Osweiler all getting multiple shots but failing to take control.