Article R58
Art. R58: Law Applicable to the merits
The Panel shall decide the dispute according to the applicable regulations and, subsidiarily, to the rules of law chosen by the parties or, in the absence of such a choice, according to the law of the country in which the federation, association or sports-related body which has issued the challenged decision is domiciled or according to the rules of lawย the Panel deems appropriate. In the latter case, the Panel shall give reasons for its decision.