Freddie Evans managed to secure another medal for Team GB as he overcame Canadian boxer Custio Clayton to move into the semi-finals and be guaranteed a bronze medal.
The welterweight will hope to progress to the gold medal match-up after recovering from a difficult second round to eventually secure the win.
Evans had a five point lead after the first round, but he seemed to switch off in the second and the deficit was reduced to just two points going into the final three minutes.
It was another close round as both men looked to pile on the pressure and the bout ended 14-14 with Evans eventually gaining the decision on count back.
Evans became the first Welshman to win a medal since Ralph Evans all the way back in 1972 and will now look to secure a place in the final.
However, there was disappointment in the light flyweight division as world number one Andrew Selby was outboxed by Cuban Robiesy Ramirez who controlled the contest throughout and consistently counter the Brit with sharp left hands.
Selby was one of the medal hopes for Team GB but he was put on the back foot for much of the fight by the young Cuban fighter and found himself trailing by five points with one round remaining.
The man from Barry in Wales was unable to overturn the deficit despite a spirited final three minutes as Ramirez's peak-a-boo defence allowed him to soak up the shots and reply with impressive counters to eventually seal a 16-11 win.
The 18-year-old Ramirez will now face Michael Conlan in the semi-finals after the Irishman managed to overcome Nordine Oubaali 22-18.