Hungary won the men's gold medal and Italy won the women's gold medal at the 2004 Olympic Games in water polo and are both likely contenders for the 2008 Olympics. Update; Hungary did win the Olympic gold medal in mens water polo at Beijing in 2008 to make a hattrick of consecutive golds. The womens competition was won by the Netherlands
for water polo? your question doesn't make sense. NONE IT'S ILLEGAL!
Croatia (CRO) won the Men's Water Polo and the Women's was won by the USA