Defending champion Serena Williams must wait to seal a place in the French Open last 16 after torrential rain stopped her match against Kristina Mladenovic.
Top seed Williams won the first set 6-4 and was a tie-break away from beating her French opponent when they were forced off Court Philippe Chatrier.
The American, playing 30th seed Mladenovic for the first time, is aiming for her 22nd Grand Slam title.
Meanwhile, Venus Williams was leading Alize Cornet 2-1 when play stopped.
Roland Garros officials are hopeful play will resume at 15:15 BST.
British number two Aljaz Bedene faces top seed Novak Djokovic later on Chatrier.
They are due on court after French sixth seed Jo-Wilfried Tsonga has played unseeded Latvian Ernests Gulbis, a contest which follows the conclusion of Williams’ match.
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