[citation needed] On August 11, 2019, Volynets won the USTA Girls 18s National Championships final over Emma Navarro, earning her a wildcard entry into the singles main draw of the US Open.

At the 2024 Thailand Open in Hua Hin, Volynets reached the quarterfinals defeating Tamara Zidanšek and upsetting fourth seed Tatjana Maria before losing to Wang Yafan in a third set tiebreak.

[21] At the WTA 1000 Indian Wells Open, she received a wildcard and defeated Mirra Andreeva[22] and sixth seed Ons Jabeur, both in straight sets to reach the third round for the first time at this level.

[24] Next, Volynets qualified for the 2024 Miami Open, making her debut at this WTA 1000, and recorded a first-round win over former Grand Slam champion Sofia Kenin,[25] before losing to 12th seed Jasmine Paolini.

[29] Volynets also qualified for the main draw at the Italian Open and defeated Wang Yafan, taking her revenge for the loss in February in Hua Hin,[30] before losing in three sets to second seed Aryna Sabalenka.

[33] In June, Volynets won her maiden WTA 125 title at the Makarska International in Croatia, defeating second seed and defending champion Mayar Sherif in the final.

[34][35] Volynets qualified for the main draw at Wimbledon[36] where she won her first-round match against María Lourdes Carlé,[37] before losing her next contest to 31st seed and eventual champion Barbora Krejčíková.

[39] Seeded sixth at the Thailand Open 2, she defeated Clara Tauson in the first round,[40] but lost her next match to Tamara Zidanšek, who took her revenge for the loss in the previous edition of the tournament in February.