The Green Bay Packers had just gone up 13-0 on the Dallas Cowboys, pending the extra point.
It was still early, but it looked like the visiting Packers might smoke the host Cowboys on Sunday Night Football in Week 4.
But then, a momentum-changing play.
The Cowboys blocked an extra point, and they picked it up, and they returned it all the way to the other end zone.
That's a 2-point conversion for the defending Dallas.
And in reality, it was a three-point swing.
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Why blocked extra point, 2-point Cowboys return was entire difference
The Packers would've gone up 14-0 on the extra point, a 14-point lead.
Instead, after the return, the Packers were up 13-2, an 11-point lead.
That's a three-point difference.
And in the closing stages, the Cowboys took a 37-34 lead on the Packers.
It's fair that things might've played out very differently in an alternate reality where the Packers just make their extra point.
But we only know this reality, and in this one, there was a three-point swing on a single play that almost never happens.
And it made the whole difference on the scoreboard in what became a 37-34 Cowboys lead over the Packers in the closing stages.
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