Player Directory
Tohoku Rakuten Golden Eagles
Tatsuki Koja
Tatsuki Koja
17
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ERA
ERA4.00
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strike out rate
K/97.00
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BB rate
BB/92.60
*FY2026
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position
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birthday
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age
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height
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body weight
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Birthplace
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Pitching and batting
left-handed pitcher / left-handed hitter
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Blood type
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Draft Year
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Biography
Shonan Gakuin High School ~ Toin Yokohama University ~ Rakuten Eagles in 2024)
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Titles won
Videos
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03:14
【味方打線の反撃信じて】古謝樹『粘り強く投げ抜いた6回2失点…待望の今季初勝利!!』
2026年05月16日(土) 18:00
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06:00
イーグルス・古謝樹投手・柴田大地投手ヒーローインタビュー 5月16日 東北楽天ゴールデンイーグルス 対 福岡ソフトバンクホークス
2026年05月16日(土) 16:45
![[Don't let your guard down] "Terrifying" Even on the bench, carelessness is the enemy [Unusual Plays 2025]](https://img.youtube.com/vi/7dRQxetVl54/sddefault.jpg)
Participation results
pitcher statistics: by year
| year | Team | ERA | Appearance | CG | SHO | No Walk | Wins | Lose | H | HP | SV | W-L % | IP | hitter | HR | SO | BB | Hit By Pitch | Wild pitch | Bork | BB/9 | K/9 | K/BB | WHIP | Avg | BABIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 |
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4.32 | 15 | 0 | 0 | 0 | 5 | 8 | 0 | 0 | 0 | .385 | 83.1 | 347 | 10 | 58 | 31 | 7 | 0 | 0 | 3.35 | 6.26 | 1.87 | 1.21 | .231 | .249 |
| 2025 |
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3.70 | 19 | 1 | 1 | 0 | 7 | 7 | 0 | 1 | 0 | .500 | 107.0 | 459 | 8 | 76 | 27 | 3 | 1 | 0 | 2.27 | 6.39 | 2.81 | 1.36 | .282 | .319 |
| 2026 |
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4.00 | 7 | 1 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | .250 | 45.0 | 190 | 6 | 35 | 13 | 0 | 0 | 0 | 2.60 | 7.00 | 2.69 | 1.27 | .256 | .279 |
| Overall record | 3.98 | 41 | 2 | 1 | 0 | 13 | 18 | 0 | 1 | 0 | .419 | 235.1 | 996 | 24 | 169 | 71 | 10 | 1 | 0 | 2.72 | 6.46 | 2.38 | 1.29 | .260 | .288 | |
2026/5/18 03:08 更新
hitter statistics: by year
| year | Team | AVG | GP | PA | AB | H | 2B | 3B | HR | TB | RBI | R | SO | BB | HBP | SAC | SF | SB | CS | GIDP | SLG | OPS | ISO | ISOD | BB/K | BABIP | AB/HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 |
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.000 | 15 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | - | - |
| 2025 |
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.000 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | - | - | - |
| 2026 |
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.000 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | - | - | - |
| Overall record | .000 | 41 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | - | - | |
2026/5/18 03:08 更新
article
古謝樹が6回105球7安打2失点の粘投で今季初勝利！ 東北楽天が接戦を制し3連勝
Pacific League Insight
2026.5.16(土) 16:48
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Tatsuki Koja complete game a complete pitch, allowing only one hit and one runs in nine innings, but it was a spectacular performance that didn't result win
Pacific League Insight
2026.4.8(水) 21:36
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![[Farm Team] Tatsuki Koja pitches 5 earned runs, Takayuki Kishi pitches 3 scoreless innings; the Eagles win a close game.](https://media.insight.pacificleague.com/webp/GKvQRefATCD2hWK7SJIg74YYugQmdQmE6hb08dbZ.webp)
[Farm Team] Tatsuki Koja pitches 5 earned runs, Takayuki Kishi pitches 3 scoreless innings; the Eagles win a close game.
Pacific League Insight
2026.3.25(水) 15:50
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Tatsuki Koja gave up 4 runs in 6 innings, and the offense remained silent, lose Tohoku Rakuten Eagles.
Pacific League Insight
2026.3.15(日) 16:04
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