Sarah Bainbridge and Craig Brown failed to lift the spirits of Great Britain's taekwondo squad as they both missed out on a spot in the quarter-finals.
Bainbridge produced an aggressive final round against Charmie Sobers but the Dutch fighter responded to seal a 7-6 win in the under-67kg class.
Brown was then defeated 12-6 by dangerous Australian Daniel Trenton in the under-80kg class.
Saturday's dual defeats follow Paul Green's under-56kg quarter-final loss.
Brown was unlucky to face the Sydney Games silver medallist in his first bout.
The 21-year-old matched Trenton in the opening exchanges before the Australian moved ahead 5-2 at the end of the first round.
Trenton then asserted his dominance with a powerful front kick that left Brown reeling on the mat.
"I just think I ran out of steam," said Brown, who is competing at his first Olympics.
"I gave my best and it's good for me to feel that I could go out there though and I didn't let the occasion get to me."
Bainbridge, the five-time British champion, had clawed her way back from 5-2 down with a succession of point-scoring hits.
But Sobers let down her defensive position and responded with some quickfire kicks to advance.
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MMIX
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