Jade Jones finally added an elusive first world title to her two Olympic crowns with victory over defending champion Lee Ah-reum of South Korea in Manchester.
The 26-year-old from Flint controlled their -57kg final from the start, extending a two-point advantage at the end of the first round into seven points at 10-3 at end of the second.
Jones, who had previously had to settle for world silver and bronze medals, repelled Lee's fightback to within three points and went on to emerge a 14-7 winner.
"There were times I doubted if I could ever do it and I can finally go to sleep at night knowing I am not going to finish my career without winning that world title," she said.
"This is only going to increase my motivation to go on and make it three Olympic titles in a row. The pressure is off me now and I am hungrier than ever to go to Tokyo and win gold again."
Elsewhere 16-year-old Aaliyah Powell won bronze in her first senior tournament. The former junior world champion outpointed Morocco's Oumaima El Bouchti 22-16 in their -53kg quarter-final to guarantee a medal before having to settle for bronze after losing her semi-final to 2017 silver medallist Tatiana Kudashova of Russia.
Powell was badly winded midway through the final round and the final score of 38-5 emphasised the gulf in class between the pair.