ISTANBUL, Turkey – No.6 seed Nao Hibino overcame a slow start to defeat wildcard Dayana Yastremska and book her place in the second round of the TEB BNP Paribas Istanbul Cup.

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Having played just a handful of clay court tournaments during her time on the ITF Circuit, Hibino’s unfamiliarity with the surface was betrayed by a number of tumbles. And by the start of the second set she looked to be slipping out of the tournament as World No.509 Yastremska threatened to move a double break ahead.

However, the Japanese player hung on, drawing herself level before breaking decisively in the final game of the set when Yastremska erred on the forehand wing. With confidence now coursing through her veins, Hibino reeled off 12 of the next 14 points to take a stranglehold of the match. It was a grip she would not relinquish, wrapping up a 2-6, 6-4, 6-3 with a crosscourt backhand winner.

“I didn´t know how she played. I struggled in the first set, but I found a way to win as the match went on,” Hibino said. “This is the first proper clay court season of my career. I practiced very hard in Japan. It was tough but I got used to the clay and hope to feel better on it in my next match.”

In the only other main draw match, No.5 seed Danka Kovinic recorded a straightforward 6-3, 6-3 victory over Kurumi Nara. Meanwhile, in the final round of qualifying there were wins for Maria Sakkari, Kristina Kucova and Sorana Cirstea.