Does the defensive matchup tool work well?

[Deegeezy]

I plan to give it a try and match my top 4 corners with my opponent's top 4 receivers. Does the function work well or is it buggy?

[Tengo Juego]

No,

It's completely broken. Some of your non aligned players will be completely outta position.

This. If you do it, you pretty much have to assign a player to every potential receiver. And that person better not be subbed out. Otherwise that person will go uncovered.

[Aso]

This explains some things.

[Saluki]

it works fine for me when i use a safety to cover speedy backs