Laura Robson clawed her way back from the brink of defeat to beat Ayumi Morita 4-6 7-5 6-2 at the Southern Californian Open.
Top seed Agnieszka Radwanska moved into the third round of the Stanford Classic after seeing off Francesca Schiavone 6-4 6-3.
Second seed Samantha Stosur was bounced out of the Stanford Classic in the second round by Olga Govortsova.
Laura Robson opened her Wimbledon campaign with a convincing 6-3 6-4 win over Maria Kirilenko.
Round-up: Serena Williams began the defence of her Wimbledon title with a comfortable 6-1 6-3 victory over Luxembourg's Mandy Minella.
Laura Robson set up a second round clash against Caroline Wozniacki at Eastbourne after beating Yulia Beygelzimer.
British number two Heather Watson won her first WTA Tour match since February at the Aegon Classic in Birmingham.
Johanna Konta's run at the Aegon Trophy continued after a 6-2 5-7 7-5 quarter-final win over Alison Riske in Nottingham.
Dan Evans set up an all-British second round battle with Brydan Klein at the Aegon Trophy in Nottingham.
Johanna Konta cruised into the second round of the Aegon Trophy while Anne Keothavong went out to Tamira Paszek.
World number six Li Na will warm-up for Wimbledon at the Aegon International in Eastbourne.
Maria Sharapova started her French Open title defence with a ruthless 6-2 6-1 dismissal of Taipei's Hsieh Su-Wei.
The full schedule for the second day at Roland Garros, with defending champion Rafa Nadal in action.
Draw for the French Open women's singles first round (prefix number denotes seeding): 1-Serena Williams (U.S.) v Anna Tatishvili (Georgia) Qualifier v
ATP World Tour Finals
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