Thabeet was scratched from Sunday's win over Dallas with a sore lower back.
Both were season highs for the Thunder big man.
He is day to day.
Thabeet was the No. 2 pick in the 2009 draft by Memphis but has averaged only 2.2 points and 2.7 rebounds in limited playing time over the last three seasons with the Grizzlies, Houston and Portland.
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