The estranged husband of UFC fighter Rachael Ostovich just got 4 years probation in his domestic violence case ... stemming from a violent attack back in November.
Arnold Berdon -- who's also an MMA fighter -- was initially arrested for attempted murder after Ostovich claimed he beat the hell out of her and fractured her eye socket.
Ostovich initially pulled out of a high-profile UFC fight with Paige VanZant due to the injury -- but was later cleared by a different doctor. Ostovich ultimately lost the fight.
As for Berdon ... after his initial arrest, prosecutors downgraded the charge to 2nd-degree assault -- and he pled no contest back in March.
Berdon was sentenced on Thursday to 4 years probation -- which appears to be a good deal for Berdon considering he was facing up to 5 years in prison.
Ostovich filed for divorce from Berdon after the attack -- and that case is still pending.