Detroit Pistons Defensive Player of the Year winners
2 players won the Defensive Player of the Year in a season with the Detroit Pistons. They are Ben Wallace (2001-02 to 2002-03, 2004-05 to 2005-06) and Dennis Rodman (1989-90 to 1990-91).
A winner counts for a club when he played for it in the season he won, the Immaculate Grid's rule. Award lists from Wikipedia. Seasons are on file in full from 1993-94; before that only some of the stars are, so an older name can be missing.