If the CAS hearing panel determines that an anti -doping rule violation was committed and that WADA  acted reasonably in electing to appeal directly to CAS, then WADA ’s costs and attorney fees in prosecuting the appeal shall be reimbursed to WADA  by FIS.66  13.4 Appea ls Relating to TUEs   TUE decisions may be appealed exclusively as provided in Article 4.4.