Kernrechtsfrage
Whether the CAS panel was improperly composed because of alleged bias connected to respondent's counsel
Extrahierter Entscheid
The bias objection was waived because it was not raised in a procedurally proper and timely manner before the arbitral tribunal.
Extrahierte Begründung
A party must challenge a suspected arbitrator as soon as it knows or should know the ground. The appellants knew the alleged facts early but failed to assert a valid recusal request before the CAS; raising it only before the Federal Supreme Court was too late.