An independent tribunal under the Tennis Anti-Doping Program said on Tuesday that Ukraine's Dayana Yastremska's temporary doping suspension has been lifted with immediate effect because there was no fault or negligence on her part.
Yastremska, 21, was suspended in January after a banned substance was found in an out-of-competition urine sample submitted by the World Anti-Doping Agency (WADA).
She denied using performance-enhancing drugs and said the positive test was the result of a "contamination event". Since his temporary suspension, Yastremska has filed several appeals but failed in every attempt.
The ban meant that the world number 37 was ineligible to play at the Australian Open despite traveling to Melbourne. She also missed the French Open and is not playing at Wimbledon, starting Monday.
"I am pleased and relieved to announce that I have been cleared of any wrongdoing," Yastremska said on Twitter.
"I have gone through a lot during the last six months and it has become difficult to cope with all the negative comments."