A 27-year-old mixed martial arts fighter pleaded not guilty in Circuit Court today to an assault charge involving his wife.

Arnold Berdon III appeared at his arraignment before Circuit Judge Colette Garibaldi after an Oahu grand jury recently returned an indictment, charging him with second-degree assault involving UFC mixed martial arts fighter, Rachael Ostovich, 27.

Berdon’s attorney, Myles Breiner, entered a not guilty plea to the charge.

Garibaldi set his trial for February.

Berdon remains free after posting $75,000 bail.

Second-degree assault is a class C felony that is punishable by up to five years in prison.

The alleged assault occurred at a home in Makaha during the early morning hours of Nov. 18. In court documents, Ostovich claimed Berdon repeatedly punched her in the head, face and ribs.

Ostovich sustained a fracture to the orbital bone around the eye socket and fled the home through a balcony.

She filed a temporary restraining order against her husband the next day.

Berdon turned himself in at the Honolulu Police Department’s Alapai headquarters on Nov. 20.

Ostovich filed for divorce on Tuesday. They have a daughter together.