On 27 December 2019, Naydenova was given a provisional suspension by the Tennis Integrity Unit (TIU) for several cases of suspected match-fixing between 2015 and 2019. After months of appealing in to the TIU in the Independent Anti-Corruption Hearing, in late November 2020, Naydenova was banned from professional tennis for life for 13 charges; 12 cases of match-fixing across
WTA Tour and
ITF Women's Circuit, and one relating to numerous incidents of non-cooperation with the TIU during the investigation process. The then 28-year-old from Plovdiv was also fined US$ 150,000. She was ranked No. 239 in singles at the time of her suspension. ==Career statistics==