[2] Whilst ranked European number one in the U14s, Kovackova won the U16 title at the Tennis Europe Masters in Monte Carlo in October 2022.

[4] In July 2023, she won the Wimbledon girls' doubles alongside compatriot Laura Samsonová.

In the final, they faced Hannah Klugman and Isabelle Lacy of Great Britain, winning in straight sets.

[6] Defending the Wimbledon girls' doubles title alongside Samsonová in 2024, they lost in the quarterfinals to Mika Stojsavljevic and Mingge Xu.

They reached the semi finals where they lost to American twin sisters Kristina and Annika Penickova.