Player Directory


Tohoku Rakuten Golden Eagles
Tatsuki Koja
Tatsuki Koja
17
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ERA
ERA3.42
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strike out rate
K/98.30
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BB rate
BB/92.44
*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
Participation results
Season results
| ERA | 3.42 | Appearance | 19 |
|---|---|---|---|
| CG | 2 | SHO | 0 |
| No Walk | 1 | Wins | 2 |
| Lose | 11 | H | 0 |
| Holds | 0 | Saves | 0 |
| W-L % | .154 | IP | 110.2 |
| hitter | 467 | HR | 12 |
| Strike Outs | 102 | BB | 30 |
| Hit By Pitch | 5 | Wild pitch | 0 |
| Bork | 0 | Runs Allowed | 48 |
| earned runs | 42 | BB/9 | 2.44 |
| K/9 | 8.30 | K/BB | 3.40 |
| WHIP | 1.24 | Avg | .253 |
| BABIP | .299 |
Results by condition
pitcher statistics: by game
| date | result | IP | Number of pitch | hitter | H | HR | SO | BB | Hit By Pitch | Runs Allowed | earned runs | ERA |
|---|
| September | 19.2 | 312 | 85 | 23 | 3 | 23 | 5 | 1 | 8 | 7 | 3.20 |
|---|
| August | 23.0 | 368 | 97 | 19 | 0 | 20 | 9 | 1 | 9 | 4 | 1.57 |
|---|
| July | 12.0 | 192 | 52 | 13 | 1 | 13 | 2 | 1 | 6 | 6 | 4.50 |
|---|
| June | 7.0 | 122 | 25 | 2 | 0 | 6 | 1 | 1 | 1 | 1 | 1.29 |
|---|
| May | 22.1 | 382 | 100 | 27 | 5 | 19 | 5 | 1 | 13 | 13 | 5.24 |
|---|
| April | 26.2 | 393 | 108 | 23 | 3 | 21 | 8 | 0 | 11 | 11 | 3.71 |
|---|
hitter statistics: by game
| date | AB | H | HR | R | RBI | SO | BB | HBP | SB | SAC | AVG | Batting results (video) |
|---|
| September | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
|---|
| August | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
|---|
| July | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
|---|
| June | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | .000 |
|---|
| May | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | .000 |
|---|
| April | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
|---|
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 |
|
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 |
|
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 |
|
3.42 | 19 | 2 | 0 | 1 | 2 | 11 | 0 | 0 | 0 | .154 | 110.2 | 467 | 12 | 102 | 30 | 5 | 0 | 0 | 2.44 | 8.30 | 3.40 | 1.24 | .253 | .299 |
| Overall record | 3.77 | 53 | 3 | 1 | 1 | 14 | 26 | 0 | 1 | 0 | .350 | 301 | 1273 | 30 | 236 | 88 | 15 | 1 | 0 | 2.63 | 7.06 | 2.68 | 1.27 | .258 | .293 | |
2026/10/3 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 |
|
.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 |
|
.000 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | - | - | - |
| 2026 |
|
.000 | 19 | 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 | 53 | 6 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 | .000 | .000 | - | |
2026/10/3 03:08 更新
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