Kassai Viktor folyamatosan lép előre az UEFA ellenőri ranglétráján is, igaz, most a Bolgár Szövetség képviseletében.

2022. augusztus 9.:

18:00 CET - Vilnius (LFF stadionas)
FK Žalgiris Vilnius (LTU) - FK Bodø/Glimt (NOR)
Referee: Sandro Schärer (SUI, Elite)
Assistant Referee 1: Bekim Zogaj (SUI)
Assistant Referee 2: Jonas Erni (SUI)
Fourth Official: Stefan Horisberger (SUI)
Video Assistant Referee: Fedayi San (SUI)
Assistant Video Assistant Referee: Lukas Fähndrich (SUI)
UEFA Referee Observer: Viktor Kassai (HUN)
UEFA Delegate: Lambriní Dimitríou (GRE)
UEFA Referee Liaison Officer: Sergejus Slyva (LTU)

20:00 CET - Budapest (Groupama Aréna)
Ferencvárosi TC (HUN) - Qarabağ FK (AZE)
Referee: Carlos del Cerro Grande (ESP, Elite)
Assistant Referee 1: José Enrique Naranjo Pérez (ESP)
Assistant Referee 2: Gonzalo García González (ESP)
Fourth Official: Miguel Ángel Ortiz Arias (ESP)
Video Assistant Referee: Xavier Estrada Fernández (ESP)
Assistant Video Assistant Referee: Inacio Iglesias Villanueva (ESP) 
UEFA Referee Observer: Milorad Mažić (SRB)
UEFA Delegate: Dennis Cruise (IRL)
UEFA Referee Liaison Officer: Ádám Farkas (HUN)