Time is running out for appeals to be filed in the case that exonerated freshly-crowned U.S. Open champion Jannik Sinner from doping .
The World Anti-Doping Agency (WADA) and Nado Italia, Italy's anti-doping agency, likely have only one more day to challenge the decision announced by the International Tennis Integrity Agency (ITIA) on Aug. 20.
There is a 21-day window to appeal that started when the parties received the decision. Any appeal would be filed to the Switzerland-based Court of Arbitration for Sport (CAS).
Sinner tested positive twice for an anabolic steroid in March but was not suspended because the ITIA determined the banned performance-enhancer entered his system unintentionally through a massage from his physiotherapist.
The doping case was kept secret until last month's announcement and the top-ranked Sinner went on to beat Taylor Fritz in the U.S. Open final on Sunday.
