Hosts France will be represented in two of the finals determined on day one of the season-opening Karate 1-Premier League event in Paris.
A 3-0 win over fellow Frenchman Yanis Lamotte put Steven Da Costa through to the men's under-67 kilograms kumite final at the Stadium Pierre de Coubertin.
Standing between him and a place on the top of the podium is Italy's Luca Maresca, who beat Brazil's Vinicius Figueira 2-0 in the other semi-final.
Da Costa's older brother Logan earned his place in the men's under-75kg kumite final, with a 4-1 victory over Japan's Yusei Sakiyama.
Providing the opposition will be Iran's Bahman Askari Ghoncheh, following his 2-0 win at the expense of Chile's Joaquín González Lavin.
Turkey will be represented in two of the other three kumite finals decided today.
Eray Şamdan will face Kazakhstan’s Darkhan Assadilov in the men's under-60kg category, while Serap Özçelik Arapoğlu meets Japan's Miho Miyahara in the women's under-50kg division.
The women's under-55kg final will pit Russia's Anna Chernysheva against Ukrainian Anzhelika Terliuga.
Gold-medal matches between Italy's Viviana Bottaro and Spain's Sandra Sánchez Jaime in women's individual kata, and Spain and Turkey in men's team kata, were also confirmed today.
Eliminations and repechages in a further seven categories take place tomorrow, with all medal matches scheduled for Sunday (January 26).