Domestic Violence Conviction for MMA Fighter
Domestic Violence Conviction for MMA Fighter
A Las Vegas jury convicted a mixed martial arts fighter of domestic violence and a host of other felony charges. War Machine fled Las Vegas in 2014 to avoid prosecution. He changed his legal name from Jonathan Koppenhaver, but has not fought professionally since 2013.

Simi Valley Police arrested the man and returned him to Nevada to face charges. The jury convicted him on 29 of 24 charges. They could not reach a verdict on the most serious charge – attempted murder. Prosecutors in Las Vegas say that War Machine beat and sexually assaulted his former girlfriend on several occasions. He also assaulted the woman’s companion, whom she had been dating for a couple of months.

The female victim in the case suffered a broken nose, facial injuries, injuries to her leg and a lacerated liver. She also testified that the defendant threatened her with a knife. She escaped to a neighbor’s house during the assault. The male victim testified that he suffered a broken nose, a dislocated shoulder, bite marks and bruising.

The defendant’s attorney attributed Koppenhaver’s violent behavior to brain injuries suffered during MMA fights, his significant steroid abuse and potentially improper use of prescription stimulants and anti-depressants. Koppenhaver could be sentenced to life in prison without the possibility of parole when he returns to court in June.

Simi Valley Domestic Violence Attorney

This case illustrates how a domestic abuse case can spiral quickly out of control. If you’re facing a domestic violence charge, you need the assistance of an aggressive, experienced domestic violence attorney like Robert Helfend.

Mr. Helfend has practiced criminal defense in Ventura County and throughout Southern California for more than 30 years, and knows what it takes to successfully defend his clients.

Contact Robert Helfend or call toll-free at (800) 834-6434, (805) 273-5611, (310) 456-3317 or (818) 591-2809 for an immediate consultation on your Ventura County domestic violence case.

Photo Credit: Peter Gordon, via

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