The World Anti-Doping Agency said on Monday it will not appeal in the case of Iga Swiatek, who last year accepted a one-month ban after testing positive for a banned substance.
Wada said it made the decision after "a thorough review" found that the "contaminated melatonin scenario, as presented by the athlete and accepted by the ITIA, is plausible".
Wada will not appeal in case of tennis player Iga Świątek. Read more here: https://t.co/eZ7OKqxx5b
— Wada (@wada_ama) January 20, 2025
Five-time tennis Grand Slam champion Swiatek pulled out of the WTA's Asian swing in September citing "personal matters".
Only later was it revealed that the former world No 1 had been absent because of a one-month ban for testing positive for the banned heart drug trimetazidine (TMZ).
She denies knowingly doping, saying it came from contaminated non-prescription medication.
The International Tennis Integrity Agency (ITIA) accepted the violation was not intentional and she accepted a one-month sanction.
The Pole breezed into the quarterfinals at the Australian Open on Monday.
She said earlier this month the doping ban had sparked inner turmoil and "chaos", calling it "the worst time in my life".
Wada has appealed to the Court of Arbitration for Sport (Cas) in the case of Jannik Sinner and is seeking to ban the men's No 1 for up to two years.
He also denies knowingly doping after twice testing positive for a banned steroid in March.
Wada will not appeal Iga Swiatek's case:
— The Tennis Letter (@TheTennisLetter) January 20, 2025
"Wada has conducted a full review of the case file related to the ITIA decision, which it received on 29 November. Wada’s scientific experts have confirmed that the specific contaminated melatonin scenario, as presented by the athlete… pic.twitter.com/6cnHM6MLbp