 He stopped Agustin Castillo of the Dominican Republic in his opening bout in Barcelona before posting another abbreviated victory over Frenchman Philippe Wartelle to reach the quarterfinals of the bantamweight division.Jalnaiz was leading Joel Casamayor halfway through the first round of their quarterfinal bout when the fancied Cuban landed a solid left that knocked him out and abruptly put an end to their duel.Casamayor went on to win the gold medal.