Gergana made her Deaflympic debut at the 2005 Summer Deaflympics which was held in Melbourne. She then went onto compete at the 2009 Summer Deaflympics and clinched gold medal in the women's singles event. In the 2013 Summer Deaflympics, which was her last Deaflympic appearance claimed silver medal in the women's singles event after becoming runners-up to Jung-Yu Fan.