Brittney Griner: I'M SINGLE AGAIN ... Divorce Finalized Brittney Griner I'M SINGLE AGAIN ... Divorce Finalized EXCLUSIVE 6/27/2016 1:42 PM PT

WNBA superstar Brittney Griner is officially out of one of the WORST marriages ever -- because a judge just finalized her divorce from Glory Johnson ... TMZ Sports has learned.

Griner and Johnson -- both WNBA players -- got married back in May 2015 ... right after they were both arrested for domestic violence for attacking each other in their Arizona home.

The marriage lasted only 28 days before Brittney pulled the plug ... while Johnson was pregnant with twins! Griner claimed Johnson was cheating on her with an ex-boyfriend.

Johnson had claimed they both agreed to parent the children -- and demanded financial support.

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A judge saw it Glory's way and ordered Griner to fork over $2,516 per month PER KID in child support ... PLUS another $2,835 per month to pay for daycare services.

Griner will NOT have to pay spousal support.

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So, that's it ... it's over.