Golden State's Jermaine O'Neal was called for a technical foul early in the second quarter after a brief altercation with Steven Adams following a foul call on Adams.
The Warriors' Andre Iguodala missed his fourth consecutive game with a left hamstring strain.
Andrew Bogut fouled out early in overtime and was 6 of 8 from the field.
Oklahoma City's Kendrick Perkins dislocated his left ring finger late in the second quarter and did not return.
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