criterion unenforceable, and ordered FISA to evaluate the athletes according to the remaining criteria. The panel referred to previous decisions on the "Osaka rule" and the BOA by-law. The panel compared the IOC decision with the IAAF decision on Russian athletes, and noted that the IOC, unlike the IAAF, had left athletes with a previous doping conviction without any path to participation, contravening principles of natural justice. The same conclusion was shortly thereafter reached in the case of swimmer Yulia Efimova, who subsequently competed and medalled at the Games. In the cases of canoeists Natalia Podolskaya and Alexander Dyachenko and rower Ivan Balandin the panels dismissed the applications, upholding the part of the IOC decision of 24 July that removed the presumption of innocence from Russian athletes. Balandin challenged the legality of the IOC decision, while Podolskaya and Dyachenko only challenged its application. The panel in Balandin's case found no reason to annul the second paragraph of the IOC decision, which, among other criteria, established that nobody implicated in the McLaren report was eligible for participation at the Games. The panel noted that while the decision establishes a presumption of guilt, this presumption is rebuttable by individual athletes. All three athletes were found to have benefitted from the "Disappearing Positive Methodology" described in the McLaren report and thus failed to meet the eligibility criteria of the IOC decision. The panels differed as to which standard of proof they required for the athletes' rebuttal of this presumption. Other cases In July 2015, in a case involving the issue of sex verification in sports, the CAS issued an interim arbitral award suspending the regulations used by the IAAF to determine whether athletes with hyperandrogenism were eligible to compete in professional women's athletics. The regulations stated that athletes with testosterone levels above 10 nmol/L were not allowed to compete in the female category. The regulations were challenged by Indian sprinter Dutee Chand. The panel ordered the IAAF to file scientific evidence regarding the connection between athletic performance and elevated testosterone levels within two years of the issuance of the interim award. This deadline was extended by two months by the CAS after an agreement between the parties. In January 2018 the CAS suspended the case for six months, asking the IAAF to clarify whether it intended to replace the disputed regulations with new rules which would not affect Chand's events. If the IAAF