All hell broke loose when several WNBA players threw wild punches outside a day club in Atlanta earlier this year ... and now, one of the women involved is apologizing.
The video is insane -- Atlanta Dream All-Star Courtney Williams is seen getting in an all-out brawl in front of a local food truck back in May ... squaring up and going after several women throughout the violent incident.
Williams' teammate, Crystal Bradford, also appears to be in the middle of the scuffle, kicking and throwing punches at the same time.