Each judoka who ended the year at the summit of the standings has been rewarded with $50,000 (£37,000/€42,000) in prize money.

World champions Naohisa Takato, Hifumi Abe and Soichi Hashimoto finished at the top of the under 60 kilograms, under 66kg and under 71kg leaderboard respectively.

Chizuru Arai, who clinched the gold medal in the under 70kg division at the World Championships in Budapest last year, was the other Japanese athlete to end the year as the world number one.

Sumiya Dorjsuren, of Mongolia, finished with the highest points total across all seven women's weight categories following a superb 2017.

Dorjsuren triumphed at the World Championships, the World Judo Masters and the Abu Dhabi Grand Slam to end on 7,132 points in the under 57kg weight class.

Russian Olympic champion Khasan Khalmurzaev's victory at the World Judo Masters on home soil in Saint Petersburg saw him clinch top spot in the men's under 81kg, while Aleksandar Kukolj, of Serbia, retained his place at under 90kg.

Dutchman Michael Korrel remained out in front at under 100kg and Brazil's David Moura ended 2017 in pole position at over 100kg.

Dorjsuren's compatriot Munkhbat Urantsetseg also pocketed the bonus prize as she outscored the rest of the field in the women's under 48kg.

World Championships bronze medallist Erika Miranda, of Brazil, maintained control of the under 52kg division and Clarisse Agbegnenou, of France, took top spot in the under 63kg division by earning bronze at the masters event in the Russian city.

Guusje Steenhuis, of The Netherlands, who also finished third in Saint Petersburg, leads the way at under 78kg and South Korean Kim Min-jeong's success at the competition saw her end 2017 as the world number one at over 78kg.