The Court of Arbitration for Sport says Sharapova and the International Tennis Federation agreed to defer the decision, which had been due to be issued by next Monday.
CAS says both parties wanted more time to prepare their case and also cited “scheduling conflicts.”
CAS says a verdict is now expected by September 19.
Sharapova filed an appeal last month, seeking to overturn or reduce the suspension imposed by the ITF. She tested positive for meldonium at the Australian Open in January.
The parties agreed to an “expedited procedure” allowing CAS to issue its ruling this month. Had the suspension been annulled, that would have made Sharapova eligible for the Olympics in August.
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