Cook Islands sailor Helema Williams has finished bottom of the field in the laser radial class at the London Olympics.
The national flag bearer was 4.58 seconds adrift of the fastest time from race one and improved one place to 40th in race two but was still more than six seconds behind the leaders.
Compatriot Ella Nicholas also missed out in the slalom kayak, finishing 18th in a field of 21 competitors.
Nicholas had a best score of 118.29, 19.54 points higher than the top qualifier from Spain.
And judokas Aleni Smith of Samoa and Sled Dowwabobo from Nauru finished out of contention in the men's under 73kg class.
Dowwabobo was beaten by an opponent from Uzbekistan in the opening round, while Smith was given a bye into the last 32, where he lost against Jaromir Jezek from the Czech Republic.