Anna Sidorova (Sochi, RUS) lost 7-2 to Alina Kovaleva (St. Petersburg, RUS) in the Final of the Russian Curling Cup, held October 1 - 6, 2020 in Dmitrov, Russia. To advance to the championship game, Sidorova won 10-3 over Maria Ermeichuk (St. Petersburg, RUS) in the semifinals of the 2020 Russian Curling Cup in Dmitrov, Russia;
 
Sidorova finished 7-0 in the 0-team qualifying round. . In their opening game, Sidorova defeated Anastasia Paramonova (Dmitrov, RUS) 10-2, then won 8-3 against Ekaterina Koroleva (Moscow, RUS) and 11-1 against Anastasia Babarykina (St. Petersburg, RUS). Sidorova won 8-6 against Irina Nizovtseva (St. Petersburg, RUS), then won 5-4 against Vlada Rumiantseva (Dmitrov, RUS) and 8-3 against Alina Biktimirova (Moscow, RUS). Sidorova won 6-1 against Ekaterina Telnova (Moscow, RUS) in their final qualifying round match.
 
Sidorova ranks 126th overall on the Year-to-Date rankings with 0.000 points earned so far this season.