Fernández is a crafty left-handed player. She turned professional in 1998, and did not have much success before her appearance at the French Open. She has six ITF titles to her name, including one in 2006. Since 2003, Fernández has been plagued with injuries. She has suffered from tendinitis in her left shoulder, an injury to her left wrist, and to her right knee. Fernández is now trying to get her career back-on-track with a healthy start. Fernández enjoys playing on hard and grass courts. She was coached by Leonardo Lerda. Her tennis inspirations are Pete Sampras and Martina Navratilova.
In April 2008, Fernández announced her retirement from professional tennis after a lengthy battle with knee injuries.