Bekas pemain tenis nombor satu dunia wanita, Jelena Jankovic, berkemungkinan terlepas aksi Terbuka Amerika Syarikat selepas dihimpit masalah kecederaan.
Canadian star and 2014 Wimbledon runner-up Eugenie Bouchard went down in three sets to Ashleigh Barty at the WTA Premier tournament.
Former champion Jelena Jankovic won through at the BNP Paribas Open as Eugenie Bouchard made a first-round exit.
Only one match ran to completion for a second straight day at the Qatar Open, Anastasia Pavlyuchenkova seeing off Jelena Jankovic.
There were few problems for Elina Svitolina, Sam Stosur and Caroline Garcia in round one of the Taiwan Open.
World number one Angelique Kerber put her shaky start behind her as she eased into the Australian Open fourth round on Friday.
Svetlana Kuznetsova only needed 76 minutes to beat Irina-Camelia Begu at the Sydney International, while the seeds struggled in Hobart.