The World Series, the world's highest triathlon competition, was held in Yokohama, and in the men's competition, Kenji Nina of the Tokyo Olympic team finished 11th, the top Japan athlete.

The world's highest peak world series, which was held with the participation of top athletes from overseas, was contested on a course around Yamashita Park in Yokohama City, with a total of 1.5 kilometers, including a 40.10-kilometer swim, a 51-kilometer bike ride, and a 5-kilometer run.

The race was held in cold, rainy conditions, and in the men's race, Tokyo Olympic athlete Niner swam dynamic in the first swim to finish fourth, and then took the top spot on the following bikes.

In the last run, he held on to the top position at the beginning, but gradually dropped in the standings, finishing 4th with a time of 1 hour, 43 minutes and 8 seconds.

The winner was Hayden Wilde of New Zealand.

After the race, Niner said, "I think I had a good race, I got a little sick on the bike, but I gave 100%. The last 5 kilometers of the run were a little bad, so I want to think about what kind of practice I need."

Women's Yuka Sato 29th Yuko Takahashi 39th

On the women's side, Yuka Sato was the top Japan athlete in 29th place, while Yuko Takahashi, who represented the Tokyo Olympics, was 39th.

The winner was Sophie Caldwell of Great Britain.