PACKERS GAMEDAY | Would the real Packers defense please stand up? After uncharacteristically out-of-sync performance against Cowboys, Jeff Hafley’s crew looks to regain prior form

GREEN BAY — From their perch in the visitors coaches’ box at AT&T Stadium, high above the field, Jeff Hafley and Ryan Downard were far too preoccupied with trying to find a solution to what was ailing the Green Bay Packers’ previously dominant defense to be asking themselves what everyone else on the outside surely was wondering:

Who are these guys, and what have they done with the defense they were during the first three weeks of the season?

After pulverizing their first two opponents — fellow NFC contenders Detroit and Washington — in victories that were even more lopsided than the final scores showed, and after more than holding up their end of the bargain in a bad road loss to the previously winless Cleveland Browns, the dudes in green and gold trying in vain to slow down the Dallas