As an abomination, it was an A+.

The Eagles built a 21-0 lead, watched it evaporate, and walked out of AT&T Stadium with a 24-21 loss that dropped them to 8-3 and a suddenly tightened NFC East race.

Dallas (5-5-1) outgained the Birds 473-339, including a decisive 125-63 edge on the ground, and shut out the Eagles (8-3) over the final 2 1/2 quarters.

Of course, it’s a long shot the Cowboys could come back and win the division, or even make the postseason, but the Eagles just gifted them an opening as holiday season approaches. And stranger things have happened, like the Birds’ collapse two seasons ago after starting 10-1 with a bunch of shaky wins.

Now, they have a short week to prep for the 8-3 Bears on Black Friday. Here’s the position-by-position report card from Sunday’s meltdown:

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