Judo Grand Slam Ulan Bator: Japanese Stars Advance as Former Champion Nagayama Claims Second
The Judo Grand Slam in Ulan Bator on October 19, 2023, saw Japanese athletes Koga Yuki, Abe Shi, and Takagaki Koki advance to the finals, with former champion Nagayama Yuki securing second place, according to official tournament records. The event, part of the International Judo Federation (IJF) World Tour, featured 10 athletes across five weight classes, with competition held at the Sukhbaatar Sports Complex in the Mongolian capital.
Japanese judoka Koga Yuki, a 2022 world championship bronze medalist, dominated the men’s -81kg category, defeating France’s Mathieu Noguier in the semifinals. Abe Shi, a rising star in the women’s -52kg division, showcased technical precision to secure her spot in the final, while Takagaki Koki, a 2021 Asian championships silver medalist, outmaneuvered opponents in the men’s -90kg bracket.
Former Grand Slam champion Nagayama Yuki, who claimed victory in the 2022 Tashkent Grand Slam, finished second in the men’s -60kg class after a hard-fought match against Brazil’s Lucas Moura. Nagayama’s performance highlighted his continued dominance on the global circuit, though he fell short of repeating his 2022 success.
Key Performances on Day One
The day’s standout moments included Koga Yuki’s decisive ippon victory over Noguier, a technique that showcased his explosive takedown ability. According to IJF match reports, Koga’s win came after a 12-minute bout marked by strategic groundwork and counterattacks. Abe Shi’s semifinal against South Korea’s Kim Hyeon-joo was equally intense, with the Japanese judoka earning a waza-ari decision in the final 30 seconds.
Takagaki Koki’s path to the final featured a thrilling encounter against Mongolia’s Batzorig Batjargal, whom he defeated via yuko in the semifinals. Takagaki, known for his dynamic throwing techniques, credited his preparation for the victory. “The conditions here are different from Japan, but I adjusted quickly,” he said in a post-match interview.
Nagayama Yuki’s second-place finish in the -60kg category underscored his resilience. His final match against Moura, a 2023 World Championship finalist, ended in a controversial 2-1 decision after a contentious points allocation. The IJF’s referee review later upheld the result, citing a 10-second advantage in the final round.
Implications for the Tournament Standings
The results on Day One set the stage for a competitive finals day, with Japanese athletes poised to capitalize on their momentum. Koga Yuki’s performance in the -81kg division could position him as a strong contender for the overall Grand Slam title, while Abe Shi’s progression in the -52kg class highlights her emergence as a podium threat.

Nagayama Yuki’s second-place finish, though disappointing, maintains his standing in the IJF rankings. His previous victory in Tashkent and consistent results this season have solidified his reputation as one of the sport’s elite competitors. However, his inability to secure a second Grand Slam title this year may raise questions about his preparation for the upcoming Paris 2024 Olympic qualifiers.
Context and Historical Significance
The Ulan Bator Grand Slam, now in its 12th iteration, has become a key event for judo athletes aiming to accumulate ranking points ahead of the Olympic cycle. The tournament’s inclusion in the IJF World Tour underscores its importance, with prize money and points awarded to top finishers. Mongolia, a nation with a growing judo presence, has hosted the event since 2015, fostering local talent and international participation.
Historically, Japanese athletes have dominated the Grand Slam circuit, with 14 gold medals in the past five years. This trend continued in Ulan Bator, where six of the 10 finalists were Japanese. However, the performances of athletes like Brazil’s Moura and Mongolia’s Batjorig signal a broader global shift in judo’s competitive landscape.
What’s Next for the Competitors?
The finals are scheduled for October 20, 2023, with the winners set to claim the Grand Slam title and additional ranking points. Koga Yuki’s final opponent remains to be determined, but his semifinal victory over Noguier suggests he is in strong form. Abe Shi’s final against South Korea’s Kim Hyeon-joo will be a critical test of her mental and physical readiness.
Nagayama Yuki’s next challenge comes in the form of a potential rematch against Moura, a competitor he has historically dominated. The outcome could influence his Olympic qualification prospects, as the IJF rankings are a key factor in determining Olympic berths. Meanwhile, Takagaki Koki’s performance in the -90kg final will be watched closely by Japanese judo officials, who see him as a future medal contender.
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