[3] Yanovskaya/Mozgov won the bronze medal at their first Junior Grand Prix event, in Gdańsk, Poland, and then gold in Tallinn, Estonia.

Their placements qualified them for the Junior Grand Prix Final, where they placed second in the short dance, third in the free, and took the silver medal ahead of Alexandra Stepanova / Ivan Bukin.

After winning the gold medal at the 2012 Winter Youth Olympics, they placed fourth at the 2012 Russian Junior Championships.

During the free dance the referee stopped their music because Mozgov's left bootstrap had come loose.

[4] Yanovskaya/Mozgov finished fourth overall behind American ice dancers Alexandra Aldridge / Daniel Eaton who moved up the rankings and took the bronze medal.

Setting personal bests, Yanovskaya/Mozgov placed first in both segments at the final and won the gold medal ahead of Kaitlin Hawayek / Jean-Luc Baker.

At the event, held in December in Barcelona, they outscored Alla Loboda / Pavel Drozd for the gold and stood atop the podium for the second consecutive year.

Ranked first in both segments, they were awarded the gold medal ahead of Lorraine McNamara / Quinn Carpenter.

[8] Debuting on the Grand Prix, they placed sixth at the 2015 Skate America and 2015 Trophée Éric Bompard.

They won the gold medal at the 2017 CS Warsaw Cup with a personal best score of 164.07 points.

[10][11] Popova/Mozgov started their season in mid September at the 2018 CS Ondrej Nepela Trophy where they won the bronze medal with a personal best score of 170.47 points.

In early December they won their second Challenger Series bronze medal of the season at the 2018 CS Golden Spin of Zagreb.