Rubuta ci gaba don wannan sakin layi - A cikin 2010, Yefimova ta lashe lambar zinare a gasar zakarun Turai ta 2010
a cikin 50 m da 100 m breaststroke. A shekara ta 2012, Yefimova ta sami tagulla a tseren mita 200 a wasannin Olympics na 2012, tare da 2: 20.92. Bayan shekara guda a Gasar Cin Kofin Ruwa ta Duniya ta 2013 a Barcelona ta yi nasara a tseren mita 200 da minti 2:19.41. A cikin tseren mita 50, Rasha ta sami sabon tarihin duniya na 29.78 wanda Rūta Meilutytė ya karya a wasan kusa da na karshe. Yefimova ta lashe wasan karshe da kashi 29.52.