[2][3] She won a silver medal in the women's sport pistol at the 2010 ISSF World Cup series in Sydney, Australia, with a total score of 781.2 points, earning her a spot on the Russian team for the 2012 Olympics.

[1][4] Mastyanina isa member of the shooting team for Armiya Sports Club, and is coached and trained by Aleksandr Suslov.

[1] Mastyanina represented Russia at the 2012 Summer Olympics in London, where she competed in the women's 25 m pistol, along with her teammate Kira Mozgalova.

Mastyanina shot 286 targets in the precision stage, and 292 in the rapid-fire, for a total score of 578 points and a bonus of 20 inner tens, finishing in twenty-fourth place.

[5] This biographical article relating to sport shooting in Russia is a stub.