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Former Pistons president Joe Dumars was fined $500,000 by the NBA in 2010 for leaking confidential league memos to Adrian Wojnarowski of Yahoo Sports, according to a report.

"The NBA decided that too many memos were making it into the media, so they conducted a sting operation over several months," wrote Kevin Draper of the New Republic. "They would change a few words or numbers in different team's copies of otherwise identical memos, so that when the memos leaked they could spot the small differences and trace them back to the leaker."

The New Republic said Dumars was caught "red-handed" in this sting. It added that Dumars, the Pistons and the NBA declined comment.