GREEN BAY, Wis. (AP) – The defense is giving up big chunks of yardage – again. Injuries are piling up. Even the offense, which has carried the Green Bay Packers the last two years, is suspect.  A year after opening the season 13-0, the Packers are in danger of letting the season get away from them. At 2-3 (yes, that includes that loss in Seattle that wasn’t really a loss), they face something of a must-win game Sunday night when they play the unbeaten Houston Texans. Chicago, which is off this week, and Minnesota have a two-game lead on Green Bay, and the Packers can’t afford to let that gap widen.  Defensive tackle B.J. Raji downplays the idea this week’s game is a “must win,” but acknowledges it’s a “big one” for the Packers.