*Club domestic league appearances and goals, correct as of 02:23, 11 August 2021 (UTC) ‡ National team caps and goals, correct as of 02:23, 28 May 2018 (UTC)
Kalaiharasan began with Negeri Sembilan.[1][2] He was moved into the club's senior team for the 2018 Malaysia Super League.[1][3] His professional debut arrived on 3 February in the Super League, he played the full ninety minutes of a 1–0 loss to PKNP.[1][4]
International
In June 2017, Kalaiharasan was called up by the Malaysia U22s for AFC qualification in Thailand.[5][6]