*Club domestic league appearances and goals, correct as of 00:10, 12 August 2024 (UTC) ‡ National team caps and goals, correct as of 23:00, 17 November 2023 (UTC)
Kállai a Haladás academy product, played as a forward in academy level before switching to defender position at the senior team under János Mátyus.[2] He debuted for Haladás in the Nemzeti Bajnokság II on 1 November 2020, a 5–0 win against Békéscsaba.[3]
Mezőkövesd
On 23 June 2022, Kállai signed to Nemzeti Bajnokság I club Mezőkövesd alongside with his brother Zalán Kállai.[4][5] Kállai debuted in the first tier on 30 July 2022, a 1–1 draw against Újpest.[6]
He made appearances for the club 57 times in the first division before heading into the final round of the already relegated side on 17 May 2024.[7]
The team started the 2024–25 season of the second tier with only 5 players from the previous season alongside Kállai.[8]
Personal life
Kállai is the older brother of Zalán Kállai who is also a footballer playing at the left side.[9]
Career statistics
Club
As of match played 11 August 2024
Appearances and goals by club, season and competition
^"Kállai Kevin: "Nagyon jó a csapategység"" [Kevin Kállai: "The team unity is very good"]. mezokovesdzsory.hu (in Hungarian). Mezőkövesdi SE. 16 November 2023. Archived from the original on 16 November 2023. Retrieved 8 August 2024.
^"Támadóból lett jobbhátvéd Kállai Kevin" [Kevin Kállai from forward to right-back]. utanpotlassport.hu (in Hungarian). 12 July 2023. Archived from the original on 7 August 2024. Retrieved 7 August 2024.
^"Testvérpárt igazolt a Mezőkövesd" [Mezőkövesd signed siblings]. m4sport.hu (in Hungarian). M4 Sport. 23 June 2022. Archived from the original on 3 July 2022. Retrieved 8 August 2024.
^"Kállai Kevin bemutatkozott az NB I-ben" [Kevin Kállai made his debut in the NB I]. illesakademia.hu (in Hungarian). 30 July 2022. Archived from the original on 8 August 2022. Retrieved 8 August 2024.
^"Testvérpárt igazolt klubunk" [Our club signed siblings]. mezokovesdzsory.hu (in Hungarian). Mezőkövesdi SE. 23 June 2022. Archived from the original on 24 June 2022. Retrieved 8 August 2024.