County Judge Kevin Emas ruled that Venus and Serena Williams and Davenport must provide sworn affidavits by Friday, when Dubravko Rajcevic's trial starts.

Rajcevic is charged with a total of four counts of stalking and trespassing at last year's Ericsson Open tennis tournament. Each count carries a possible one-year sentence.

Hingis, the top-ranked women's tennis player, will be a prosecution witness and is expected to testify Monday.

The affidavits are to provide testimony on whether the other players were ``in a position to observe whether or not Hingis was suffering from substantial emotional distress'' when Rajcevic is accused of stalking Hingis.

Rajcevic's lawyer also said he wanted to question the three stars about the ``high levels of security'' during WTA events.