NEW YORK (AP) – The Securities And Exchange Commission is filing a complaint against professional golfer Phil Mickelson related to insider trading.

The SEC says a gambler named William Walters received tips and business information about Dean Foods Co. from former Dean Foods director Thomas Davis between 2008 and 2012.

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In 2012, the SEC says Walters called Mickelson, who owed him money, and urged him to trade Dean Foods stock. The SEC says Mickelson did so the next day and made a profit of $931,000.

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Mickelson was not in the field of the Byron Nelson Classic in Irving, Texas, where play began Thursday morning. Calls to his representatives were not immediately returned.

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