In what situation would a player not be able to appeal a decision made by their confederation to CAS?

A player would be unable to appeal a decision made by their confederation to the Court of Arbitration for Sport (CAS) under the circumstance where they have played in more than three full international matches. This particular situation pertains to the rules established by FIFA regarding eligibility and the legal standing of athletes in international competitions.

The reasoning lies in FIFA regulations, which state that once a player has participated in more than a specified number of official matches for their national team, they may lose the ability to challenge certain decisions regarding their eligibility or participation in future international matches. This is primarily to maintain the integrity of competitions and ensure that players who have committed to playing for their country cannot indefinitely question their status or the decisions related to international representation.

Additionally, the other scenarios, such as eligibility for competitions, financial matters, or doping violations, typically retain the player's right to appeal to CAS. These areas are often more directly associated with regulatory frameworks that allow for judicial review, unlike the implications of participating in international matches which can limit an individual's recourse based on their commitment to the national team.