Olga Antonova/Oleg Krasikov (Saint-Petersburg, RUS) lost 11-4 to Anastasia Mishchenko/Alexey Tuzov (Dmitrov, RUS) in the Bronze Medal game at the 2021 Russian Mixed Doubles Cup in Irkutsk, Russia. of the 2021 Russian Mixed Doubles Cup in Irkutsk, Russia; Olga Antonova/Oleg Krasikov (Saint-Petersburg, RUS) lost 11-4 to Anastasia Mishchenko/Alexey Tuzov (Dmitrov, RUS) in the Bronze Medal game at the 2021 Russian Mixed Doubles Cup in Irkutsk, Russia. Antonova/Krasikov lost 11-10 to Anastasia Babarykina/Konstantin Manasevich (Saint-Petersburg, RUS) in the semifinals to drop into the third place game. of the 2021 Russian Mixed Doubles Cup in Irkutsk, Russia; and won 9-2 over Viktoria Enbaeva/Petr Dron (Saint-Petersburg, RUS) in the quarterfinals. of the 2021 Russian Mixed Doubles Cup in Irkutsk, Russia;
 
Antonova/Krasikov finished 3-1 in the 20-team qualifying round. . In their opening game, Antonova/Krasikov defeated Ekaterina Telnova/Artem Puzanov (Moscow, RUS) 7-5, then won 8-3 against Anastasia Borisova/Roman Serebrennikov (Tomsk, RUS). Antonova/Krasikov went on to lose 11-8 against Mishchenko/Tuzov. Antonova/Krasikov responded with a 9-2 win over Arina Leontieva/Petr Triandafilidi (Vladivostock, RUS) in their final qualifying round match.
 
Antonova/Krasikov ranks 212th overall on the Year-to-Date rankings with 0.000 points earned so far this season.