PHILADELPHIA — The Giants are entering the danger zone.

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Scratch that. They aren’t entering anything. They are in it, entangled in it, mixed up in a familiar ensnarement that is impossible to escape and is pulling them down into the depths that they have inhabited for so very long.

“We know we’re in a bad spot,’’ said wide receiver Wan’Dale Robinson, who has spent almost his entire four-year stay with the Giants in a bad spot. “We’ve got to dig ourselves out if we want to get out of it.’’

“Want to” has almost always translated to “can’t do” with a franchise that took a hit on Sunday in a building where the hits keep knocking them down. Was it really a mere 17 days ago that the Giants left MetLife Stadium with a well-earned 34-17 victory over the Super Bowl champion Eagles, in one of their most good-feeling, feel-good moments in years?