Among the East Asian country's winners at the German city's ISS Dome was former world champion Funa Tonaki, who beat South Korea's Kang Yujeong by ippon in the women's under-48 kilograms final to keep her Tokyo 2020 Olympic Games ambitions alive.

The first bronze medal match was won by Portugal's Catarina Costa at the expense of Spain's Laura Martinez Abelenda.

Brazil's Nathalia Brigida defeated Germany's Katharina Menz in the second.

Japan's other female gold medallist was world champion Tsukasa Yoshida after she overcame Olympic champion Rafaela Silva of Brazil in the under-57kg final.

Yoshida collected her seventh IJF Grand Slam title after utilising her sutemi-waza in the form of a sumi-gaeshi, which was awarded a waza-ari score.

Mongolia's Sumiya Dorjsuren beat Poland's Anna Borowska to one of the two bronze medals and was joined on the third step of the podium by France's Sarah Leonie Cysique following her win over Germany's Theresa Stoll.

Japan won both of today’s men’s events with world bronze medallist Ryuju Nagayama coming out on top in the under-60kg category and World Judo Masters gold medallist Jōshirō Maruyama prevailing in the under-66kg division.

Nagayama brushed aside World Judo Masters gold medallist Robert Mshvidobadze of Russia in his final, catapulting his opponent through the air with a uchi-mata for the maximum score.

In the under-66kg final, Maruyama sealed his third consecutive win at an IJF World Tour event to arguably usurp two-time and reigning world champion Hifumi Abe in Japan's pecking order.

Maruyama threw South Korea's Kim Limhwan with a lightning quick uchi-mata for a waza-ari and bombarded his rival with attacks without securing a second score.

The pressure is now mounting on Abe for the first time in his career having lost to Maruyama in the Osaka Grand Slam final in November and falling to defeat in his opening contest at the Paris Grand Slam earlier this month.

The under-60kg bronze medallists were The Netherlands’ Tornike Tsjakadoea and Georgia’s Lukhumi Chkhvimiani with Spain’s Francisco Garrigós and South Korea’s Lee Harim falling just short

Completing the under-66kg podium were Russia's Yakub Shamilov, who beat Italy’s Manuel Lombardo, and Moldova's Denis Vieru, who defeated Mongolia's Baskhuu Yondonperenlei.

The only non-Japanese gold medallist today was Olympic champion Majlinda Kelmendi in the women’s under-52kg category.

The Kosovan earned her sixth IJF Grand Slam title with a straightforward win over Mongolia's Sosorbaram Lkhagvasuren, the Buenos Aires 2018 Youth Olympic Games silver medallist.

Kelmendi was not at her explosive best in Düsseldorf, winning three of her five contests by three shidos.

Lkhagvasuren, 17, fell in the same manner but will be thrilled to open her IJF World Tour medal account at this early stage of her career.

Italy's Odette Giuffrida and Japan's Chishima Maeda were the bronze medallists with the former beating Russia's Yulia Kazarina and the latter defeating South Korea's Jeong Bokyeong.

Competition in Düsseldorf is due to continue tomorrow.

Watch the action on Judo TV.