|Date of birth||May 4, 1979|
|Place of birth||Buenos Aires, Argentina|
|Height||5 ft 10 in (1.78 m)|
|Current club||QNK Quảng Nam|
|1999-2000||Ferro Carril Oeste||17||(3)|
|2002-2003||San Martín (M)||21||(4)|
|2009||Liga Deportiva Alajuelense||13||(1)|
|2010-2012||SHB Đà Nẵng F.C.||37||(10)|
|2012–present||QNK Quảng Nam|
|* Senior club appearances and goals counted for the domestic league only and correct as of 28 December 2012.
† Appearances (Goals).
Hernández began his professional career with the Primera División side Ferro Carril Oeste in 1999. After a year with them he moved to Colón de Santa Fe for a season. In 2002 he was signed by Italian club U.S. Cremonese. After a short spell with them he ended up back in Argentina playing for National B Division teams San Martín de Mendoza and Huracán until 2005 when he was picked up by Chilean powerhouse Cobreloa.
On March 30, 2006, he was signed by the Colorado Rapids. He started his first game with the club on April 2 against the Columbus Crew and scored 8 goals for the club. He was traded to the Columbus Crew on February 27, 2008 for Tim Ward. He was waived on June 27, 2008.