Ray Rice Pleads NOT GUILTY to Assaulting Wife -- Denies K.O.'ing Wife

Baltimore Ravens running back Ray Rice has plead NOT GUILTY to attacking his then-fiance at an Atlantic City casino back in February.

Rice appeared in court in New Jersey moments ago -- with his lawyer and his wife Janay Palmer by his side -- stemming from an incident at the Revel Casino.

TMZ Sports posted footage showing Rice dragging an unconscious Palmer out of an elevator that night before he was arrested for aggravated assault.

Prosecutors reportedly offered Rice a plea deal -- which includes probation and NO jail time if he completes an anger management class. Rice has not officially accepted the deal.

Rice is due back in court on May 29th.