Koji Ōnuma

Koji Onuma is the kind of guy who quietly earns your respect. Born in the summer of '79 in Higashiosaka — that gritty, industrial corner of Osaka famous more for small factories than for celebrities — he grew up in a place where you work with your hands and prove yourself through effort, not flash. Standing 178 cm, he's no giant by baseball standards, but Higashiosaka has a funny way of producing people who are tougher than they look. He was Seibu's first-round pick in 2000 and pitched for Seibu and Yokohama until shoulder pain ended things in 2012 — not everyone in baseball gets a highlight reel, but somebody still has to show up, do the work, and hold the pitching staff together. I respect that quietly.

This take was written by generative AI, one per person, from publicly reported facts (editorial policy). It is a reading of the record, not reporting.

Koji Ōnuma is a Japanese former professional baseball pitcher born on July 3, 1979, in Higashiosaka, Osaka Prefecture. He stands 178 cm tall. Hailed as the fastest pitcher in Shikoku at Jinsei Gakuen High School, he was the Seibu Lions' first-round pick in the 2000 draft and pitched for Seibu and Yokohama until shoulder pain ended his career in 2012.

Name (English)

Koji Ōnuma

Name (Japanese)

大沼幸二

Reading

おおぬま こうじ

Born

July 3, 1979 (age 47)

Origin

Higashiosaka, Osaka Prefecture, Japan

Height

178cm

Occupation

Baseball player

Zodiac / Chinese zodiac

Cancer / Goat

• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E5%A4%A7%E6%B2%BC%E5%B9%B8%E4%BA%8C
• Wikidatahttps://www.wikidata.org/wiki/Q6426447

Tags

• From Osaka Prefecture
• Baseball player

Last updated

October 18, 2026

Only publicly available facts are listed; non-public or unconfirmed items are omitted. Base data was compiled from Wikidata from June 2026 onward; ages are recalculated daily and deaths are checked against Wikidata on an ongoing basis. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.