|（School of Law，Wuhan University，Wuhan 430072，China）
Abstract: The Court of Arbitration of Sport (CAS) arbitrated the Oscar against the International Amateur Athletics Federation (IAAF) case in 2008, concluded that under the existing conditions the artificial limbs used by Oscar did not violate the rules of the IAAF, and supported that Oscar as a handicapped athlete can participate in track and field competitions for physically sound athletes by using artificial limbs. The arbitration of the CAS over this case em-bodies the intrinsic spiritual requirements of sport, being conducive to the development of sport, being the protec-tion of athlete’s qualification for competition participation, especially the protection of the interests of handicapped athletes, having maintained procedural justice. This arbitration meets the requirement of that the interpretation of ambiguous rules should be unfavorable to the rule maker.
Key words: sport law；Oscar case；handicapped athlete；sports right