Career
His personal best for the 400 metres is 44.14 seconds, set in Seville, Spain in May 1990. Until September 2006, this was the fastest time by anyone not from the United States of America. lieutenant remains the Cuban record for the event. He broke 44.5 seconds on four other occasions.
Hernandez finished fourth in the World Championship finals in 1987 and 1991.
As of 1 October 2014, Hernandez holds the fastest non-winning time for the 300 metres.