WADA released its decision after Iga Swiatek sealed a victory against Eva Lys to reach the Australian Open quarterfinals.

World No. 2 and five-time Grand Slam champion Iga Swiatek opened up about her recent one-month doping ban for a positive drug test, describing it as the most challenging period of her tennis career. Speaking on the eve of the Australian Open, Swiatek shared that the ordeal was “pretty chaotic” and labeled it the “worst time” of her life.

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 World Anti-Doping Agency (WADA) said on Monday it would not lodge an appeal to the Court of Arbitration for Sport (CAS) in the case of Iga Swiatek after the former world number one tested positive for prohibited substance trimetazidine (TMZ).

MELBOURNE–Iga Swiatek felt satisfaction and hoped for closure after the World Anti-Doping Agency (WADA) said on Monday that it would not appeal her case at sport’s highest court. WADA’s announcement came shortly after the five-times Grand Slam champion produced a ruthless display during her 6-0 6-1 win over German lucky loser Eva Lys to move into the Australian Open quarter-finals for the second time in her career.

Australian Open star Iga Swiatek previously served a one-month ban after testing positive for a prohibited substance.