Zaytseva has a career high WTA singles ranking of 359 achieved on 15 January 2024. She also has a career high WTA doubles ranking of 526 achieved on 15 January 2024.[2]
In 2019, Zaytseva defeated Swiss Sebastianna Scilipoti at Tennis Europe Junior Masters U16 and became the champion.[3] Zaytseva was chosen as the player of the year in the U16 category by Tennis Europe in 2019.[4]
Partnering Anna Sisková, Zaytseva won her first $50k tournament in January 2014 at the ITF Nonthaburi in Thailand.[5]