Dee ihe na-aga n'ihu maka paragraf a - N'afọ 2010, Yefimova nwetara ihe nrite ọla edo na 2010 European Aquatics Championships
na 50 m na 100 m breaststroke. N'afọ 2012, Yefimova natara ọla nchara na 200 m na 2012 Summer Olympics, na 2:20.92. Otu afọ mgbe e mesịrị na 2013 World Aquatics Championship na Barcelona ọ meriri na 200 m na 2:19.41. N'ihe omume 50 m, onye Russia nwetara ndekọ ụwa ọhụrụ nke 29.78 nke Rūta Meilutytė mebiri na ọkara ikpeazụ. Yefimova meriri na njedebe na 29.52.