She said she's been using melatonin “for a long time," adding that “all my traveling, jet lag and work-related stress mean that sometimes without it, I couldn’t fall asleep.”
Iga Swiatek, five-time Grand Slam champion, accepts a one-month suspension in doping case
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“Going from this kind of tennis, where I felt like I’m playing the best tennis in my life, to another surface, where I kind of struggle a little bit more, it’s not easy,” said Swiatek, who only once has made it as far as the quarterfinals at Wimbledon, exiting at that stage a year ago.
No. 1 Iga Swiatek loses in Wimbledon's third round to Yulia Putintseva of Kazakhstan
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