British heavyweight Mahama Cho insists he can still reach Rio 2016 despite injury denying him the opportunity to secure early Olympic qualification.
Cho needed to rank inside the top-six by the end of the year to secure GB a guaranteed place in Brazil for the +80kg division.
However, he now cannot achieve that after a knee injury contributed to a quarter-final defeat at the Manchester Taekwondo Grand Prix.
"It's disappointing, but I'm a fighter and I never give up," Cho told BBC Sport.
Cho suffered the injury at the Serbian Open last week - an event most British fighters missed due to its proximity to the higher-ranking Manchester Grand Prix.
The Ivory Coast born fighter, who has also previously competed for France, does not believe he worsened the lateral ligament injury during his 13-8 loss to Iran's Omid Amidi and hopes to avoid surgery.
"I could look back and say 'oh I shouldn't have done it' [competed in Serbia], but I needed the points," he said.
"I don't see this [loss] as an opportunity gone because I've made big improvements from six months ago and will come back stronger."
London Olympian Martin Stamper exited at the quarter-final stages of the -68kg competition with team-mates Michael Harvey and Jordan Gayle losing in the earlier round.
That division was won by two-time World champion Dae-Hoon Lee of South Korea, with French fighter Haby Naire taking the women's -67kg title and Uzbekistan's Dmitry Shokin claiming men's heavyweight gold.
Whilst Jones has already secured GB an Olympic place for Rio, Walkden needs a podium finish to achieve the same in her division.