British taekwondo fighter Jade Jones is one fight away from a gold medal match after she booked a place in the semi-finals of the women's under-57kg with victory over Japan's Mayu Hamada.
The Wales teenager had opened her Olympic debut with an impressive 15-1 victory over Serbian Dragana Gladovic.
And a couple of early kicks to the body put Jones, world silver medallist in 2011, ahead by 3-1 after the first round against Hamada. Working off her front leg as a guard, Jones moved 4-2 ahead, and then crucially landed a trademark head kick to take a seven-point lead into the final two minutes.
Jones - Youth Olympic champion two years ago - kept her composure to close out for another victory by 13-3. In the semi-final, Jones will face Tseng Li-Cheng, the world number one from Chinese Taipei.
Liverpool's Martin Stamper was next up in the under-68kg against Serbian Damir Fejzic, who won the European Olympic qualification tournament in Russia.
Waiting for the winner was Turkish top seed Servet Tazegul, the 2011 world champion and European champion, a bronze medallist from Beijing.
Stamper, a bronze medallist at the 2012 European Championships in Manchester, had earlier edged past Erick Osornio Nunez of Mexico.
Fejzic, 18, pulled off a shock win over number five seed Peter Lopez Santos. An early appeal for a head kick from the Serbian corner was rejected, meaning they lose the opportunity to ask for review again.
Like in Stamper's first bout, there was no score after the first round. Fejzic connected at the start of the second, although the Team GB fighter levelled with a punch to the body, he still trailed 2-1 at the buzzer.
Lifted by the crowd, Stamper, 25, landed some quick body shots and then went ahead 5-2 with a turning kick. Despite fending off some determined attacks by the Serbian, it was Stamper who progressed 8-3, to guarantee another shot at gold for Team GB.