Petra Kvitova will seek stability and peace to exorcise the demons of a frustrating six months that culminated in a second-round defeat at Wimbledon.
The two-time champion slumped out of Wimbledon with a straight-sets loss to Russian Ekaterina Makarova, the 10th seed beaten 7-5 7-6 (7-5).
World No.35 Makarova took the first set on Friday before rain forced the tie into the weekend, but not even the delays could help 2011 and 2014 champion Kvitova find her Wimbledon groove.
Kvitova has now reached the second week in a slam just twice in the past eight major tournaments, and admitted to battling to adjust to life with new coach Frantisek Cermak, while she also recently said she had split from her fiance.
"In the last couple of months a lot of things happened in my life, it's a lot of changes, I just have to get used to all that," said Kvitova, who parted ways with long-term coach David Kotyza in January.
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"I hope I will finally have some stability and peace, because the last six months have been exhausting for me."
Makarova's victory tees up a third-round battle with Barbora Strycova.
Fifth seed Simona Halep shrugged off a mystery Achilles problem to ease past Kiki Bertens 6-4 6-3 and into the fourth round.
Halep will face ninth seed Madison Keys and will hope to keep her niggling injury at bay.
Beaten 2014 Wimbledon finalist Eugenie Bouchard slipped out 6-4 6-3 in the third round at the hands of 19th seed Dominika Cibulkova, who will meet Agnieszka Radwanska in the fourth round after the third seed beat Katerina Siniakova 6-3 6-1.
American Keys defeated France's Alize Cornet 6-4 5-7 6-2 in a dogged performance to line up that intriguing encounter with Halep.
Australian Open champion Angelique Kerber dispatched fellow German Carina Witthoeft in straight sets to book a fourth-round clash with Misaki Doi.
Kerber won out 7-6 (13-11) 6-1 to set up that meeting with Doi, who saw off Anna-Lena Friedsam 7-6 (7-1) 6-3.
Lucie Safarova held off giant-killer Jana Cepelova, the Slovakian qualifier who had dumped out second seed Garbine Muguruza.
Safarova prevailed 4-6 6-1 12-10 in an engaging encounter, her experience and tenacity eventually winning out.
Timea Bacsinszky beat Monica Niculescu 4-6 6-2 6-1 and will meet Anastasia Pavlyuchenkova in the third round.
Sloane Stephens edged a second-round battle with Mandy Minella 3-6 7-6 (8-6) 8-6 to line up a meeting with Svetlana Kuznetsova.
Sabine Lisicki slumped to a galling 7-6 (7-2) 6-1 defeat to Yaroslava Shvedova, who will now take on Safarova in the fourth round.
