[1] She skated in singles until ankle problems led her to take up ice dancing under coach Svetlana Alexeeva.

After a tryout, they both felt it would be a good partnership, despite her needing time to adapt to his different technique and some disapproval from the Russian skating federation.

[6] They placed fifth at their first Grand Prix event of the season, the 2010 Skate America, and then won silver at the 2010 Trophée Eric Bompard.

On their free dance, which was choreographed by Sergei Petukhov, Riazanova said, "A young woman remembers her beloved, who is no longer alive.

[11][12] They finished 5th overall at the 2012 European Championships but received a small bronze medal for their 3rd place in the short dance.

[15] At the suggestion of Tatiana Tarasova, they decided to scrap a new free dance to Pink Floyd's Hey You and made a new one to a waltz from the Godfather films.

In the 2013–14 season, Riazanova/Tkachenko finished fourth in their two Grand Prix events, the 2013 Skate Canada and the 2013 Rostelecom Cup.