Education
In 2013, Annenkova finished 15th in all-around at the 2013 Russian Junior Championships, she finished 2nd place as out of competition at 2013 Moscow Grand Prix behind Yulia Bravikova.
In 2013, Annenkova finished 15th in all-around at the 2013 Russian Junior Championships, she finished 2nd place as out of competition at 2013 Moscow Grand Prix behind Yulia Bravikova.
Her international breakthrough event was competing in junior division at the 2012 Moscow Grand Prix. In 2014, Annenkova finished 4th in all-around at the Russian Junior championships. She qualified to 2 event finals winning gold in ball and ribbon.
Following the leg injury of Yulia Bravikova, both Annenkova and Polyakova flew to Nanjing but Annenkova was selected by Irina Viner as the final representative of her country at the 2014 Youth Olympic Games in Nanjing, China.
Senior
In 2015 season, Annenkova debuted as a senior competing in the international division at the 2015 Moscow Grand Prix. Annenkova finished 6th in all-around at the 2015 Russian Championships.
Annenkova competed as an The Human Context (Out of Competition) at the MTK International Tournament in Budapest and Dundee Cup International in Sofia.
Annenkova briefly competed as member of the Russian Group but returned to competing as an individual gymnast.