[10][11] Together with Michael J. Garcia, the chairman of the investigation chamber, he examined the allegations of corruption in connection with the awarding of the Football World Cup 2018 and 2022 to Russia and Qatar.
[12] In order to avoid conflicts of interest for the US American Garcia, Borbély was given the main responsibility for the investigation of the 2018 FIFA World Cup in October 2013.
[17] Together with Hans-Joachim Eckert, chairman of the adjudicatory chamber, Borbély had made a significant commitment to fight against a confidentiality clause in ongoing proceedings of the FIFA Ethics Committee and for more transparency and the right to information.
[18] Borbély was responsible for the investigation of high FIFA officials, like Jerome Valcke, Jeffrey Webb, Franz Beckenbauer, Eugenio Figueredo, Nicolás Leoz, Ángel María Villar,[19] Jack Warner,[20] Chung Mong-joon,[21] Wolfgang Niersbach[22] and Theo Zwanziger.
[24] In May 2017, he was already invited to the relevant FIFA Congress in Bahrain and, without giving reasons or in contrary to statements by Secretary-General Fatma Samoura, was informed during the arrival flight that he would not be nominated for re-election.