[1] Holubtsova/Bielobrov debuted on the ISU Junior Grand Prix (JGP) series in September 2014, placing tenth in Japan.

[2] Competing in the 2019–20 ISU Junior Grand Prix, Holubtsova/Bielobrov finished fifth in Latvia and seventh in Croatia.

[2] Holubtsova/Bielobrov made their senior international debut in October 2021, placing fourth at the Budapest Trophy in Hungary.

[2] In late February, Vladimir Putin ordered an invasion of Ukraine, as a result of which the International Skating Union banned all Russian and Belarusian skaters from competing.

They then went on to make their senior ISU Grand Prix debut at 2022 Skate America, where they placed tenth.