Jan 2 (Reuters) - Detroit Pistons forward Charlie Villanueva has been fined $25,000 for a flagrant foul on Sacramento Kings guard Isaiah Thomas, the National Basketball Association said on Wednesday. Villanueva was ejected for the foul, which occurred with four seconds left in the second quarter of Detroit's 103-97 home win over Sacramento on Tuesday. (Reporting by Mark Lamport-Stokes in Los Angeles; Editing by Steve Keating)

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