The shocking decision by the Dallas Cowboys to trade Micah Parsons to Green Bay after four dominant seasons as a pass rusher is far from unprecedented.

A very similar trade happened on the eve of the 2018 season when the Oakland Raiders shipped two-time All-Pro and one-time Defensive Player of the Year winner Khalil Mack to Chicago .

Dallas Cowboys defensive end Micah Parsons, who had been holding out over a contract dispute, lies on the medical table during a preseason game against the Atlanta Falcons on Aug. 22 in Arlington, Texas. Gareth Patterson, Associated Press

Both trades happened after failed contract talks and featured two first-round picks in return, although Dallas also got defensive tackle Kenny Clark from the Packers.

That 2018 trade didn't ultimately work out for

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