To put it simply: An NFL team usually is only as good as its quarterback.

The Jets plunged to their eighth consecutive losing season after Aaron Rodgers went down with an Achilles injury only four snaps into the opening game.

The Giants played musical chairs with their quarterback spot — after Daniel Jones tore his ACL, they found a brief spark with Tommy DeVito and more consistency from veteran Tyrod Taylor — as they failed to follow up on last year’s playoff berth.

One could say the same about two of New York’s fiercest rivals: the Cowboys and the Eagles.