‘It’s not so easy’ for Angelique Kerber, but she is finding focus in Miami

Australian Open champion Angelique Kerber reached the last 16 at the WTA Miami Open on Sunday despite some shaky play as opponent Kiki Bertens retired in the third set.

Second seed Angelique Kerber advanced to the fourth round of the WTA Miami Open when Dutch qualifier Kiki Bertens was forced to retire in the third set on Sunday.
Bertens dominated the world No 3 in the opening set, but the 24-year-old became unwell early in the second set and was forced to take a medical timeout.
She eventually retired with an illness in the final set to hand Kerber a 1-6, 6-2, 3-0 win on another steamy day in south Florida.
"I think Kiki's a great player," Australian Open champion Kerber said in her on-court interview.
"She played very well in the first set and I was not finding my rhythm at the beginning.
"For me, it's not so easy. But I'm trying to focus on my game, doing my stuff and not looking too much over the net."
Up next for the German is unseeded Hungarian Timea Babos, who advanced with a 7-5, 6-0 win over Japanese wildcard Naomi Osaka.
Other third-round winners on Sunday included American Madison Keys, Victoria Azarenka of Belarus, and Briton Johanna Konta.
Keys, the 22nd seed, upset ninth seeded 2015 US Open finalist Roberta Vinci of Italy 6-4, 6-4.
Fourth-seeded Garbine Muguruza crushed Nicole Gibbs 6-1, 6-0 in the final match of the evening. 
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