[4] In 1998, at the European Junior Championships in Saint Petersburg Sirobaba won gold medal in team competition.

[5] She competed in different junior meets since and won bars and beam in a tournament in Japan in 1999.

[4] In 2000, Sirobaba won a silver medal in vault at the European Junior Championships in Paris.

[4] Later, Natalia won a bronze medal in all-around event at the international competition "Kyiv Major Gymnastics Cup".

[8] In March 2002, Sirobaba competed at the Stella Zakharova Gymnastics Cup in Kyiv.