Today is the fourth day of the Olympic Games inRio de Janeiro. Ekaterina Karsten will perform in the quarterfinals of rowing. Today the match for the semi-finals will be held in table tennis. Women"s basketball team ofBelaruswill meet with the Brazilian team. After the third competition day the leaders of the medal standings are still theUnited States.Chinaoccupies the second place andAustralia- the third place. Athletes from 34 countries have won Olympic medals.