burton won bronze the the 2005 and 2007 European Championships
Euan Burton claimed a bronze medal at the World Judo Championships in Brazil, beating Italian Giuseppe Maddaloni on an ippon in the -81kg category.
The 28-year-old Scot's success followed a silver medal for Briton Peter Cousins in the -100kg on Friday.
Essex's Cousins lost out on an ippon to Luciano Correa.
Any Britons finishing in the top six in Rio de Janeiro guarantees an Olympic berth for their country but will not definitely fill that spot themselves.
Londoner Winston Gordon was seventh in the -90kg category, won by Georgia's Irakli Tsikidze, who defeated Greek Ilias Iliadis with a yuko.
Karina Bryant (+78 kg) took fifth to earn another place for Team GB, but Michelle Rogers (-78 kg) missed out.
The quota places are earned for the weight category, meaning the GB team now have a place in the -100kg men and the +78kg women.
Tiago Camilo ensured Brazil will enjoy their most successful World Championships after he won gold in the -100kg category.
And Joao Gabriel Schlittler claimed bronze in the +100kg category by defeating Frenchman Anthony Rodriguez.