The Suns, 0-3 at home, led by 11 with 2:38 to go in the third quarter and eight to start the fourth, blowing a late lead at home for the second time this season.
They were up by 17 in their home opener against Dallas but lost in double overtime.
Hamilton and Tayshaun Prince scored 17 apiece and Rasheed Wallace 16 for Detroit. Ben Wallace had 15 points and 16 rebounds.
Leandro Barbosa scored 21 to lead seven Suns in double figures but didn't play the final 6:05. Steve Nash scored 18 with eight assists and six turnovers. Shawn Marion had 12 points and 10 rebounds.
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