The former football hero and a new set of lawyers hope to convince a judge during a hearing that began Monday that trial lawyer Yale Galanter had conflicted interests and shouldn't have handled Simpson's armed case.
Simpson appeared in court wearing a blue jail uniform. His hair was short and grayer than it was during a previous court appearance in 2008.
He entered the courtroom in handcuffs, flanked by guards and nodded toward people he recognized in the second row.
Simpson is serving nine to 33 years in a Nevada prison. He's due to testify Wednesday.
Galanter is scheduled to testify Friday. He is declining comment before then.
Simpson says that Galanter knew ahead of time about his plan to retrieve what he thought were personal mementoes from two sports memorabilia dealers at a casino hotel room in September 2007.
Simpson also says his lawyer never told him a plea deal was on the table.
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