Fernández holds the Mexico Fed Cup record for most ties played, which stands at 29.

She started out as a 15-year old in 1995 and on debut played one of the longest Fed Cup matches in history when she defeated Colombia's Carmiña Giraldo, 13–11 in the third set.

She made her first WTA Tour main draw appearance in 1998, featuring in the doubles at Quebec City with Tracy Singian.

Her only singles appearance in a main draw came at Acapulco in 2004, where she competed as a wildcard and was beaten in the first round by Ukrainian player Julia Vakulenko.

[3] Retiring from professional tennis in 2004, Fernández was the last Mexican female player to be ranked in the world's top 200 for singles until Marcela Zacarías in 2015.