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. He's a Scorpio born in the year of the Rooster, which sounds like a fortune cookie but honestly fits the vibe of someone who shows up, puts in the work, and doesn't make a big noise about it. 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.

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)

Zodiac / Chinese zodiac

Scorpio / Rooster (酉)

Origin

Ueda, Nagano, Japan

Occupation

Baseball Player

High school

Ueda Nishi High School

Motto

Private

• 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

Tags

• From Nagano Prefecture
• Baseball Player

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.