Dutch ace Van Rijsselberge - a long-time leader - confirmed his place at the top of the podium with victory in the men's medal race today, finishing ahead of Nick Dempsey of Great Britain in silver position and Poland's Przemyslaw Miarczynski, who took bronze.
Julien Bontemps of France finished the medal race in second behind Van Rijsselberge, but it was not enough to secure him a place on the podium.
Marina Alabau Neira took gold in the women's RS:X event after another fine day on the Nothe Course.
The Spaniard has been a dominant force in the event and rounded off her regatta in typical style, winning the medal race to seal her overall victory.
Ukraine's Olha Maslivets came in second, 27 seconds further back from the leader, but that was not enough to lift her into medal contention.
Tuuli Petaja of Finland claimed silver with a strong finish to the medal race, while Poland's Zofia Noceti-Klepacka finished third on the day to claim bronze overall.
This was the last RS:X races at the Olympic Games, with the sport due to be replaced by Kiteboarding for Rio 2016.
Meanwhile, in the men's 470 class, the race is on for gold between Australia's world champions Mat Belcher and Malcolm Page and Great Britain pair Luke Patience and Stuart Bithell.
The pairs have already amassed a large enough points margin heading into Thursday's medal race to be sure that the third-placed crew - currently Argentina - cannot catch either of them.
They will now fight it out for second place, but Patience has warned his Australian rivals: 'We didn't come here for second place.'
A fierce battle is also expected in the women's 470 class, where New Zealand head Great Britain ahead of tomorrow's final two fleet races.
New Zealand's Jo Aleh and Olivia Powrie got a double victory today to extend their advantage over Britain's Hannah Mills and Saskia Clark.
The Kiwis have built a four-point advantage, while in the Elliott 6m Match Racing Australia and the Netherlands are level at 1-1, Finland head the USA 2-0, Spain are 2-0 up on France and Russia and Great Britain are level at 1-1.