WADA, world sport’s anti-doping body, will not appeal against the one-month doping sanction levied against tennis world No 2 Iga Swiatek.

The Pole recorded a positive test for the banned substance trimetazidine (TMZ) in August. The International Tennis Integrity Agency (ITIA) subsequently announced a one-month suspension in November after ruling that the player’s level of fault was at the lowest end of the range for ‘No Significant Fault or Negligence’ and not intentional.

Swiatek served 22 days of the backdated ban from September to October and the remainder between November and December before returning to play.

She is currently in action at the Australian Open in Melbourne where she is into the quarterfinals following a 6-0 6-1 win over Germany’s Eva Lys on Monday.

The five-time Grand Slam champion had previously said she was “not expecting” any appeal with POLADA, the Polish national anti-doping body, also confirming previously they would not appeal either.

WADA had until January 21 to lodge an appeal of its own but confirmed on Monday it has chosen against doing so.

“The World Anti-Doping Agency (WADA) confirms that following a thorough review, it will not lodge an appeal to the Court of Arbitration for Sport (CAS) in the case of Polish tennis player, Iga Swiątek, who tested positive for trimetazidine (TMZ), a prohibited substance, in August 2024,” a statement read.

WADA says it has conducted a full review of the case file related to the ITIA decision with its “scientific experts” agreeing that Swiatek’s explanation that the positive test was a result of a contaminated melatonin product was “plausible” and “there would be no scientific grounds to challenge it at CAS.”

The statement continued: “Further, WADA sought advice from external legal counsel, who considered that the athlete’s contamination explanation was well evidenced, that the ITIA decision was compliant with the World Anti-Doping Code, and that there was no reasonable basis to appeal it to the CAS.”

Swiatek will face Emma Navarro of the United States in the quarter finals on Wednesday. A four-time winner of the French Open and one-time U.S. Open champion, Swiatek is looking to go beyond the semi-final stage in Melbourne for the first time.

This article originally appeared in The Athletic.

Tennis, Women's Tennis

2025 The Athletic Media Company