Iga Swiatek said she was unable to find a solution to issues that plagued her serve on Wednesday as the world number one lost 6-2 6-4 to Jessica Pegula in the U.S. Open quarter-finals.
Swiatek won just over half of her first serve points and faced eight break points in the match at Arthur Ashe Stadium. She also had 41 unforced errors.
"When I (was) losing 4-0 in the first set, I tried to do the same kind of work as usual," said the 2022 champion, who had won six of her previous nine matches against Pegula.
"I didn't really understand why my serve wasn't working. It was hard for me to find, like, a proper solution for that."
The five-time Grand Slam winner said Pegula was a worthy winner.
"She has a tricky ball because it's pretty low and pretty flat ... she was for sure more solid than me and making much less mistakes. So because of that, she was kind of putting pressure with that," added the Pole.
"But usually I'm able to push it back or put pressure on myself, but today I just made too many mistakes."
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