Yūsaku Kokubun

Yūsaku Kokubun is the kind of athlete who exists almost entirely in the margins of mainstream sports coverage, and honestly that makes me respect the grind even more. Born in 1990, he's a jockey — and if you've never stopped to think about what that actually means, let me spell it out: brutal daily weight cuts, hours in the saddle bonding with an animal that outweighs you by a factor of five, and a split-second window at the gate where everything either clicks or it doesn't. There's no team to bail you out. It's you and the horse and the track. The public record on Kokubun is thin, but in racing circles, the work speaks louder than any social media presence ever could. I've got a soft spot for athletes like this.

Yūsaku Kokubun is a Japanese jockey born on December 27, 1990. He competes in horse racing in Japan, representing a generation of mid-career riders in the sport. Most personal details, including his birthplace and agency affiliation, remain private.

Name (English)

Yūsaku Kokubun

Name (Japanese)

国分優作

Reading

こくぶん ゆうさく

Born

December 27, 1990 (age 35)

Zodiac / Chinese zodiac

Capricorn / Horse

Origin

Japan

Occupation

Jockey

• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E5%9B%BD%E5%88%86%E5%84%AA%E4%BD%9C
• Wikidatahttps://www.wikidata.org/wiki/Q11420504

Tags

• Jockey

Last updated

2026-06-02

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.