Tennis Tennis Yastremska ineligible for Australian Open after CAS dismisses appeal Yastremska was suspended last month after the World Anti-Doping Agency (WADA) found a banned substance in an out-of-competition urine sample she submitted. Reuters 03 February, 2021 22:11 IST Top 30 tennis pro Dayana Yastremska was provisionally suspended for failing an out-of-competition doping test. - Getty Images Reuters 03 February, 2021 22:11 IST The Court of Arbitration for Sport (CAS) on Wednesday dismissed an appeal by Ukraine's Dayana Yastremska who was provisionally suspended for doping, leaving her ineligible to play in the Australian Open that begins next week.Yastremska was suspended last month after the World Anti-Doping Agency (WADA) found a banned substance in an out-of-competition urine sample she submitted.READ| Trapped in Australian Open quarantine, Bopanna waiting for 'freedom day' The International Tennis Federation (ITF) had denied Yastremska's application to have the suspension lifted, prompting the world number 29 to approach the CAS to hear an urgent appeal so she could play in the year's first Grand Slam."The provisional suspension imposed on Dayana Yastremska in the challenged decision remains in force until a final decision is rendered by the ITF," CAS said in a statement.READ| Kyrgios rants over time violation before Murray River Open win The ITF said in a statement that Yastremska "remains ineligible to compete" pending a final resolution of her case.Yastremska, who travelled to Melbourne for the Australian Open, had denied using performance-enhancing drugs and said the positive test was the result of a "contamination event". Read more stories on Tennis. For more updates, follow Sportstar on :