Aleksandra Antonova/Vadim Shvedov (St. Petersburg, RUS) qualified for the 2021 Russian Mixed Doubles B-Division Championship playoffs, dropping their quarterfinals match 12-0 against Nina Polikarpova/Kamil Karimov (Irkutsk, RUS).
 
Antonova/Shvedov finished 4-1 in the 0-team qualifying round. . In their opening game, Antonova/Shvedov lost 8-2 to Kristina Dudko/Vladislav Velichko (Krasnoyarsk, RUS), then responded with a 8-4 win over Anastasia Borisova/Alexey Kulchak (Moscow, RUS). Antonova/Shvedov won 5-4 against Viktoria Desova/Kirill Palagney (Irkutsk, RUS), then won 11-1 against Sofia Yarutina/Alexey Demin (Yekaterinburg, RUS) and 14-4 against Valeria Denisenko/Mikhail Vlasenko (Irkutsk, RUS) in their final qualifying round match.
 
Antonova/Shvedov ranks th overall on the Year-to-Date rankings with points earned so far this season.