Mazur began competing on the international junior level in 2007. At the
2008 European Junior Championships she was a member of the bronze medal-winning Team Ukraine. Mazur debuted as a senior in 2010. She competed at her first
World Championships in 2011 in
Montpellier, France, where Team Ukraine won the bronze medal. She was a member of the Ukrainian group that competed at the
2012 London Olympics and finished fifth in all-around. In 2013, Mazur was eighth at the
Moscow Grand Prix behind Azeri gymnast
Marina Durunda. At the
Holon Grand Prix senior international division, she won the bronze medal in all-around. She competed at the
2013 European Championships and together with
Ganna Rizatdinova and
Alina Maksymenko won Ukraine the Team silver medal. She also qualified for the hoop final and finished seventh. Mazur returned to competing with the Ukrainian Group at the
2013 Summer Universiade, winning the silver in Group all-around and bronze medals in 10 clubs and 2 ribbon / 3 balls. Mazur, together with Maksymenko and Rizatdinova, appeared in an editorial on the 2013 August edition of Ukraine Vogue. She was a member of the Ukrainian group that won bronze in 10 Clubs at the
2013 World Championships in
Kyiv, Ukraine. At the World Club Championship, the 2013 Aeon Cup in Tokyo, Mazur competed with Rizatdinova and junior
Eleonora Romanova and won the team silver representing the
Deriugins School. In 2014, Mazur started her season competing at the 2014 L.A. Lights, she then competed at the 2014
Miss Valentine Cup in Tartu, Estonia, she became 2014 "Miss Valentine" and the winner of the individual all-around. she also won the gold medal in ball final. She competed at the
2014 Debrecen World Cup finishing 9th in the all-around and won her first World Cup medal, a silver medal in hoop final. Mazur finished a distant 23rd in the all-around at the
2014 Stuttgart World Cup after a series of multiple mistakes from all her apparatus routines. Mazur then competed at the
2014 Holon Grand Prix where she finished 6th in all-around, she qualified to 4 event finals and won bronze medal in hoop. Mazur finished 9th in all-around at the
2014 Lisboa World Cup. On 9–11 May Mazur competed at the
2014 Corbeil-Essonnes World Cup and finished 29th in all-around. On 10–15 June Mazur competed at the
2014 European Championships and finished 14th in all-around. On 8–10 August Mazur competed at the
2014 Sofia World Cup finishing 15th in all-around and placed 7th in hoop finals. On 22–28 September Mazur, along with teammates
Ganna Rizatdinova and
Eleonora Romanova, represented Ukraine at the
2014 World Championships where they took the Team bronze with a total of 135.515 points. Mazur finished 18th in the all-around finals. In 2015 Season, Mazur's first competition was at the 2015 L.A. Lights where she finished 4th in the all-around. She finished 4th in all-around at the 2015 Valentine Cup and won silver in clubs, bronze in ribbon. On 21–22 March Mazur competed at the
2015 Thiais Grand Prix finishing 16th in the all-around. On 27–29 March Mazur came 22nd in the all-around at the
2015 Lisboa World Cup. Mazur with teammates (
Ganna Rizatdinova,
Eleonora Romanova) competed at the
2015 European Championships where Team Ukraine won bronze. In July, Mazur finished 11th in the all-around at the
2015 Summer Universiade. In August, Mazur then competed at the 2015 Ukrainian National Championships where she won the all-around silver medal behind
Ganna Rizatdinova. At the
2015 Budapest World Cup, Mazur finished 10th in all-around, her highest all-around placement for the 2015 Season. On 9–13 September Mazur, together with teammates
Ganna Rizatdinova and
Eleonora Romanova, competed at the
2015 World Championships in
Stuttgart, with Team Ukraine taking bronze. Mazur qualified to the all-around finals finishing in 22nd place. On 2–4 October Mazur, together with teammates
Ganna Rizatdinova and junior Olena Diachenko, represented Team
Deriugins School at the 2015 Aeon Cup in
Tokyo Japan, Mazur finished 9th in the individual all-around finals behind Italian
Veronica Bertolini and with team Ukraine taking silver in the overall standings. In 2016 Season, Mazur started her competitions at the 2016 Valentine Cup in
Tartu, Estonia where she won silver in hoop, ball and bronze in ribbon. On 26–28 February Mazur competed at the
2016 Espoo World Cup finishing 14th in the all-around. On 17–20 March Mazur competed at the
2016 Lisboa World Cup where she finished 11th in the all-around and qualified to ball final. At the 30th
Thiais Grand Prix event in
Paris, she finished 13th in the all-around. On 1–3 April she competed at the
2016 Pesaro World Cup where she finished 16th in the all-around. On 6–8 May Mazur competed at the
Brno Grand Prix where she finished 10th in the all-around. On 27–29 May Mazur then finished 14th in the all-around at the
2016 Sofia World Cup. On 3–5 June Mazur finished 13th in the all-around at the
2016 Guadalajara World Cup with a total of 69.550 points. On 17–19 June Mazur then competed at the
2016 European Championships where she finished in 16th place. On 1–3 July Mazur competed at the
2016 Berlin World Cup finishing 10th in the all-around. On 9–11 September Mazur together with teammates
Ganna Rizatdinova and junior
Olena Diachenko represented team
Deriugina school at the annual 2016 Aeon Cup in
Tokyo, where they won the team bronze and with Mazur finishing 14th in the all-around. In 2017, Mazur started the post-Olympics season competing at the
Miss Valentine Cup, where she won the all-around gold with a total of 64.750 points. On 17–19 March Mazur competed at the
Kyiv Grand Prix finishing 5th in the all-around. Shortly after Worlds, she announced her retirement. == Routine Music Information ==