With 11 races down at the Byte CII World Championship, a Nanjing 2014 Youth Olympic Games Qualifier, Hungary's Jonatan Vadnai leads the boys whilst Odile Van Aanholt (NED) has control in the girls.
Three races on the fourth day of the competition saw the second discard come into play and in a northerly breeze racing was exceptionally close with competitors going round the course as if they were tied on a rope.
Overall leader Vadnai had a hard time in the light air with two 17th place finishes, discarded one, but made amends on the final race of the day with a second in very light air. Henry MArshall (USA) had a better day with a 6, a discarded 13th and a race win and is now only 12 points behind the Hungarian leader.
Croatia's Pavle Zivanovic remains in third whilst Bermuda's Peter Dill has dropped out of the top five. Singapore's Bernie Chin has moved into fourth with Justin Vitecoq (CAN) taking over in fifth day. The Canadian had the best overall results on the fourth day with a 3,2,8.
In the girl's fleet Van Aanholt retained her lead with finishes of 5,6 and a DSQ which she duly discarded. Hungary's Maria Erdi had a strong day posting a bullet, a fourth and a discarded OCS to put her just six points behind the leader. The fifth day will be an exciting day as the pair, who are well clear of the rest, fight for gold.
Bermuda's Cecilia Wollmann is in third place followed by Samantha Yom (SIN) and Florence Allan (CAY).