British teenager Emma Raducanu suffered a 6-2 6-1 defeat to Marta Kostyuk in the quarter-finals of the Transylvania Open on Friday night.
Raducanu is adjusting to life in the spotlight after her remarkable US Open victory earlier in the season, which came on the back of her emergence at Wimbledon when she reached the fourth round.
However her Ukrainian opponent proved to be too much in what was a relatively straightforward win for her fellow teenager, as the 19-year-old hammered Raducanu 6-2 in the first set before taking the second by an even more comfortable 6-1 margin.
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Kostyuk dominated the service game with four aces to the 18-year-old Briton’s zero, and with five break points from eight chances, she showed the ruthlessness required to stake a claim for a semi-final appearance on Saturday in Romania.
"I don't know how I won the first game," Kostyuk said. "I think that's where everything started.
"I somehow won that game and I gained this confidence, like I'm not going to lose this match. After that, by the fifth game maybe, I figured out how to play her - today.
"Maybe next time I play it's going to be different tactics."
Kostyuk will face the tournament favourite, Romanian Simona Halep. The former world number one secured her passage to the semis earlier on Friday. She defeated compatriot Jaqueline Cristiane with a routine 6-1 6-1 victory.
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