Seiya Yokoyama

Honestly, there's something quietly exciting about a guy whose Wikipedia page is still basically a stub — Seiya Yokoyama is one of those players where you get the feeling the story hasn't really started yet. Born in late 2005 in Ueda, Nagano, he came up through Ueda Nishi High School, which isn't exactly a factory churning out household names, and that underdog energy is part of what makes him interesting to track. The details are thin right now — no flashy stats plastered everywhere, no big agency announcement — and I kind of respect that. The ones who are still a little mysterious at this stage of their career are usually the ones worth remembering later. Keep an eye on this one.

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.

Seiya Yokoyama is a Japanese baseball player born on October 28, 2005, in Ueda, Nagano Prefecture. He attended Ueda Nishi High School in Nagano. Most personal and career details remain private or undisclosed as of 2024.

Name (English)

Seiya Yokoyama

Name (Japanese)

横山聖哉

Reading

よこやま せいや

Born

October 28, 2005 (age 20)

Origin

Ueda, Nagano, Japan

Occupation

Baseball Player

Zodiac / Chinese zodiac

Scorpio / Rooster

High school

Ueda Nishi High School

• Instagramhttps://www.instagram.com/yoko.sei.34/
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E6%A8%AA%E5%B1%B1%E8%81%96%E5%93%89
• Wikidatahttps://www.wikidata.org/wiki/Q123405930

Tags

• From Nagano Prefecture
• Baseball Player

Last updated

September 18, 2026

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.