My Take
Seiji Tahara is one of those players who never made the highlight reel but absolutely made his manager's life easier — the kind of reliever you trust when things get tight. A sidearm pitcher out of Miyazaki, he spent his entire nine-year pro career with the Yomiuri Giants after being drafted in 2011, and he carved out a respectable 222 appearances with a 3.13 career ERA by doing the unglamorous stuff right: changing speeds, staying low in the zone, getting ground balls. His 1.00 ERA across 18 appearances in 2015 is the sort of line that makes you do a double-take. He's not a household name, but that's kind of the point — the bullpen arms who quietly hold leads are the ones teams quietly mourn when they're gone. After retiring in 2021 he took on factory shifts and vaccine distribution before landing a coaching gig, which honestly tells you everything about the guy's work ethic.
Overview
Seiji Tahara is a retired Japanese professional baseball pitcher born on September 2, 1989, in Nobeoka City, Miyazaki Prefecture. After playing corporate baseball for Mitsubishi Motors Kurashiki Oceans, he was drafted in the 7th round by the Yomiuri Giants in 2011 and made his professional debut on June 11, 2012. Over eight seasons with the Giants he appeared in 222 games, recording 12 wins, 7 losses, and a 3.13 ERA before being released after the 2020 season and announcing his retirement in March 2021.
1. Profile
- Name (English)
- Seiji Tahara
- Name (Japanese)
- 田原誠次
- Reading
- たはら せいじ
- Born
- September 2, 1989 (age 36)
- Zodiac / Chinese zodiac
- Virgo / Snake (巳)
- Origin
- Nobeoka, Miyazaki, Japan
- Blood type
- Private
- Height
- 181 cm
- Agency
- Private
- Active years
- 2012–2020
- Occupation
- Professional Baseball Player
2. Background
- Elementary school
- Private
- Junior high
- Private
- High school
- Seishin Ursula High School
- University
- Private
- Debut
- June 11, 2012
Timeline
- 2008Joined Mitsubishi Motors Kurashiki Oceans (corporate baseball)
- 2011Drafted 7th round by the Yomiuri Giants
- 2012Professional debut on June 11; recorded first win on August 9
- 2016Career-high 64 game appearances in a single season
- 2019Reached 200 career game appearances (April 27)
- 2020Released by the Yomiuri Giants after the season
- 2021Announced retirement (March)
- 2022Became a coach at Oki Data Computer Education Academy
3. Relationships
- Spouse
- Private
- Children
- Private
- Parents
- Private
- Siblings
- Private
4. Personality
Motto
Private
6. Links
7. About this entry
Tags
- Last updated
- 2026-06-02
Facts are limited to publicly available information up to 2024; non-public items are marked "Private / Unknown". English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.