Yastremska, who was informed earlier this month of a positive test for mesterolone—an anabolic steroid—had traveled to Melbourne with other WTA players in the hopes of playing the Australian Open despite the provisional suspension, and may still appeal the ITF's decision to the Court of Arbitration for Sport.
The 20-year-old, who tested positive for COVID-19 at the beginning of the off-season, strenuously denied having taken performance-enhancing drugs in a statement posted to her social media platforms following the initial announcement.
“Given [the] low concentration and given my negative test two weeks earlier," she wrote, "I have received scientific advice that the result is consistent with some form of contamination.”
Yastremska reached the third round of the Australian Open in her main draw debut back in 2019—the same year she won two of her three WTA titles—and has been previously ranked as high as world No. 21 on the WTA rankings.