OJ Simpson's appeal for release from a Nevada prison is now up to the state's Supreme Court.
Simpson lawyers argue in a final brief to the Nevada high court that a lower court judge was wrong to deny the former football star a new trial in his 2008 kidnapping and armed robbery conviction for a hotel room heist in Las Vegas.
The filing, submitted Friday, came after prosecutors last month submitted documents saying there's no need for another trial.
Simpson argues that his trial lawyer, Yale Galanter, botched his case and had conflicted interests.
Galanter denies any conflict existed.
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Simpson is now 67.
He's serving nine to 33 years in prison and won't be eligible for parole until 2017.
The Supreme Court denied a previous Simpson appeal in 2010.
