The opening weekend of the NFL season was capped by a pair of unlikely comebacks led by the reigning MVP and a quarterback making his NFL debut.

Josh Allen and the Buffalo Bills overcame a 15-point deficit in the fourth quarter on Sunday night to beat Baltimore in one of the most improbable comebacks in recent history.

J.J. McCarthy and the Minnesota Vikings followed that up a night later against Chicago when McCarthy became the first QB in four decades to erase a 10-point hole in the fourth quarter and win in his NFL debut.

A look deeper inside the numbers shows how surprising both games truly were.

Let’s start with McCarthy and the Vikings. After sitting out his rookie year with a knee injury, McCarthy struggled in the first three quarters of his debut before throwing two TD passes a

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