LOS ANGELES (AP) — A judge in Los Angeles is telling Donald Sterling to show up in court today to testify in his challenge to the sale of his Los Angeles Clippers basketball team.

The NBA wants to oust Sterling because of racist remarks he made to a girlfriend that were recorded.

Sterling's attorneys argue that his estranged wife Shelly had no authority to unilaterally reach a deal to sell the team to former Microsoft CEO Steve Ballmer for $2 billion.

Sterling skipped yesterday's opening of the case in a Los Angeles courtroom, and instead, the first testimony came from a neurologist who said the 80-year-old has Alzheimer's disease.

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