She was named late to the Russian Olympic Team for the 2010 Winter Olympics in Vancouver, Canada as the team's third. Originally Olga Jarkova was named to the team; however, Jarkova was taken out at the last minute and Sidorova was added to the team. For the fifth match, against the USA, and the sixth match, against Switzerland, Sidorova replaced Ludmila Privivkova as skip. She also replaced Ludmila Privivkova in the 8th Game against China as the Skip. Sidorova thus became the youngest skip at the games, since British skip Eve Muirhead, while also 19 years old at the time, is ten months older.
In addition to playing third on the Russian Olympic Team Sidorova has also skipped her own team on the World Curling Tour (with Olga Jarkova throwing second stones). She joined up with Privivkova's team in 2011. In 2012, Sidorova began skipping the team, with Privivkova at third. The team won a gold medal at the European Curling Championships in 2012 with their new lineup.
She will be the skip of team Russia at the 2014 Winter Olympics.
Sidorova's Russian rink had a fairly successful Grand Slam season in 2012–13, making it as far as the semi-finals at the 2012 Colonial Square Ladies Classic.
|F||Lost in Final|
|SF||Lost in Semifinal|
|QF||Lost in Quarterfinals|
|R16||Lost in the round of 16|
|Q||Did not advance to playoffs|
|DNP||Did not participate in event|
|N/A||Not a Grand Slam event that season|
|Manitoba Liquor & Lotteries||DNP||DNP||QF|
Margarita Fomina, Third
Alexandra Saitova, Second
Ekaterina Galkina, Lead
Nkeirouka Ezekh, Alternate