Player Directory
Tohoku Rakuten Golden Eagles
Tatsuki Koja
Tatsuki Koja
17
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ERA
ERA3.17
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strike out rate
K/98.75
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BB rate
BB/92.34
*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
04:24
古謝樹『6回までパーフェクト投球…8回86球2安打1失点で極上の投手戦を繰り広げる!!』《THE FEATURE PLAYER》
2026年08月09日(日) 16:32
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05:24
【ト】トンボは水野タツキ推し【まとめるほどではないまとめ】
2026年09月18日(金) 07:49
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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3.17 | 20 | 2 | 0 | 1 | 3 | 11 | 0 | 1 | 0 | .214 | 119.1 | 496 | 12 | 116 | 31 | 5 | 1 | 0 | 2.34 | 8.75 | 3.74 | 1.16 | .239 | .289 |
| Overall record | 3.66 | 54 | 3 | 1 | 1 | 15 | 26 | 0 | 2 | 0 | .366 | 309.2 | 1302 | 30 | 250 | 89 | 15 | 2 | 0 | 2.59 | 7.27 | 2.81 | 1.24 | .253 | .290 | |
2026/10/15 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 | 20 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | - |
| Overall record | .000 | 54 | 6 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | - | |
2026/10/15 03:08 更新
article
![[Miyazaki Phoenix League] Kosei Koga allowed 6 runs in 5 innings; Soshi Yoshino hit an RBI single, but Rakuten Eagles' winning streak comes to an end.](https://media.insight.pacificleague.com/webp/IVWvyvzoTqjVHUHGPqJmO4pCsM7QfFzVz6USi37J.webp)
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Hokkaido Nippon-Ham, Tohoku Rakuten Eagles, Saitama Seibu Lions, and Orix Buffaloes announce participating members for Miyazaki PL.
Pacific League Insight
October 5, 2026 21:42
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Tatsuki Koja recorded a career-high 14 strike outs! The Inuwashi secured a convincing victory with a shutout game relay involving Wataru Karashima.
Pacific League Insight
2026年10月3日 21:22
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Wataru Karashima, the last homegrown player who knows what it's like to be number one in Japan, makes his final career appearance, retiring the batter with a fly ball to left on four pitches.
Pacific League Insight
October 3, 2026 6:49 PM
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