The Green Bay Packers just fired one of the most successful coaches they ever had.

After a 13-season tenure with the Packers, Mike McCarthy was released by the team Sunday after dropping his third straight outing.

Their recent loss came against one of the worst teams in the league, the 2-9 Arizona Cardinals. It did not help the team's confidence but instead led to the end of the McCarthy era in Green Bay.

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The Packers are set to miss another playoff appearance. They are out of the playoff picture with a 4-7-1 record as their problems continue.

The 55-year old took over the head coaching position in 2006. From then on he was able to lead the Packers to nine playoff appearances in that span. Above all, he coached the team to a Super Bowl victory in 2011 against the Pittsburgh Steelers.

According to Chad Graff of The Athletic, rival head coach Mike Zimmer called his firing as “sad”.

“I think it's a mistake,” the Minnesota Vikings head coach added in reference to McCarthy's release.

Zimmer took over the Vikings in 2014 and the two play-callers have battled it out ever since. In the past five seasons, he has an edge over McCarthy with a 5-4-1 record.

In contrast to their NFC North rivals, the Vikings are a potential playoff team this season. They aim to continue their strong run in 2017 and are currently in the hunt for a playoff spot at 6-5-1.

The Packers, meanwhile, have had to make some adjustments in their coaching staff this offseason. A new head coach is expected to take over to guide Aaron Rodgers and company.