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Dallas Cowboys owner and general manager Jerry Jones fired coach Wade Phillips on Monday, sources told ESPN's Chris Mortensen and Ed Werder.

The move comes less than a year after he was given a two-year contract extension for leading the Cowboys to their first playoff win in over a decade. He will be replaced by offensive coordinator Jason Garrett, the sources said.

The end for Phillips came after a 45-7 loss to the Green Bay Packers on Sunday night extended Dallas' losing streak to five games as the Cowboys -- which began the season with Super Bowl expectations -- fell to 1-7 overall.

Phillips ends his time in Dallas with a 35-23 record, having won two NFC East titles and getting the Cowboys' first playoff victory since 1996. Phillips is 83-65 overall as a head coach.

Jones, who had never fired a coach in-season since purchasing the team in 1989, had said multiple times that Phillips would finish out this season. The owner cited research showing interim coaches are not successful and that was a deterrent for him making the change.

But the Cowboys' five-game slide -- during which they've been outscored 179-107 -- has made things difficult for Jones, who even apologized publicly to fans. In two of the games, Phillips questioned the passion of his team and wasn't sure if he lost them.