The second seed is into the second round.
Sloane Stephens and Heather Watson's Nuremberg Cup run is over
Heather Watson won her opening match at the Nuremberg Cup.
Tim Ellis looks at 10 moments when tennis stars lost their cool.
The seeds are already starting to fall in Prague.
Heather Watson and Eugenie Bouchard's poor run of form continued at the Volvo Car Open.
Sloane Stephens claimed her first victory since winning the US Open as she beat Pauline Parmentier in Acapulco.
Caroline Wozniacki joined the Grand Slam winner's circle on Saturday when she won the Australian Open final.