They mitigate his lack of coverage skill by playing him so far off the LOS he could never stop a conversion.

If Cullen didn't interchange safeties so much and they just played Wingard in the box, he'd be "decent" most of the time probably.

Unfortunately he's a liability in coverage and they have to account for that by backing him way up on snaps requiring him to cover.
It's like the rest of the secondary is playing the coverage called, but Wingard is playing "prevent" by himself.
That's a problem.

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