Kōta Kawaguchi

Kōta Kawaguchi is one of those guys who quietly keeps the whole game honest — a professional baseball umpire, born in 1971, who went through Chuo Gakuin University and then chose a career where the whole point is that nobody notices you. And honestly? I find that kind of fascinating. While players chase stats and managers chase trophies, umpires chase accuracy, and that's it. Strike or ball, safe or out — you've got maybe half a second to make a call in front of tens of thousands of people who all think they know better than you. Personal details are almost entirely off the public record, which feels weirdly appropriate: the best umpires are invisible when they're doing their jobs right. There's a quiet confidence in choosing that path — not the spotlight, just the truth of the moment.

Kōta Kawaguchi (born May 28, 1971) is a Japanese professional baseball umpire. He graduated from Chuo Gakuin University before pursuing a career in officiating. His active period and agency affiliation are not publicly disclosed. Details about his background and career timeline remain largely private.

Name (English)

Kōta Kawaguchi

Name (Japanese)

川口亘太

Reading

かわぐち こうた

Born

May 28, 1971 (age 55)

Zodiac / Chinese zodiac

Gemini / Boar

Origin

Japan

Occupation

Baseball umpire

University

Chuo Gakuin University

• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E5%B7%9D%E5%8F%A3%E4%BA%98%E5%A4%AA
• Wikidatahttps://www.wikidata.org/wiki/Q11477934

Tags

• baseball umpire

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.