Kristyna Pliskova knocked out No.4 seed Roberta Vinci for the second time in two months, becoming one of the first winners at the Ladies Open Biel Bienne.
WTA Staff

BIEL/BIENNE, Switzerland - Kristyna Pliskova continued her steady climb up the rankings as she scored the first big upset of the Ladies Open Biel Bienne, knocking out No.4 seed Roberta Vinci, 6-4, 6-4 to advance into the second round.

"I'm happy I'm back indoors, because my serve works even better here than outside," she said after the match. "I think this match was pretty solid from my side; I faced just one break point, which is kind of good. She's not in her best form, so that helped me get it done in two sets."

Pliskova recovered from a set down to defeat Vinci at the Dubai Duty Free Tennis Championships just two months ago, but was far more decisive on Monday, striking 10 aces and getting a crucial break in each set to seal the win in one hour and 13 minutes.

"I learned a lot from our match in Dubai, and even more from the time before I'd played her and I'd lost like 6-1, 6-1 five years ago. I knew her slice is brilliant. She proved that again, but I learned a lot from both matches."

Up next for Pliskova is either Donna Vekic or Sorana Cirstea; with her quick serve and fearsome groundstrokes, the unseeded Czech youngster will certainly be one to watch in the indoor courts of Biel/Bienne this week.

"The court is kind of different from others, but so far I like it."

Earlier in the day, Elise Mertens caused another upset by defeating No.8 seed Monica Niculescu, 6-2, 6-2. The first winner in the tournament's history was Germany's Mona Barthel, who ousted Jana Cepelova, 6-3, 6-4.