Philadelphia Coach Maurice Cheeks coached the Blazers for four years before being fired last March.
Iverson hit 16-of-27 from the floor and made all five of his foul shots, as Philadelphia beat Portland for the fifth time in the last seven meetings.
Zach Randolph scored 24 points and Darius Miles had 13 for the Trail Blazers, who have lost five of their last seven games.
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