Player Directory


Chiba Lotte Marines
Koki Yamaguchi
Koki Yamaguchi
51
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Striking Power Index
OPS.757
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Slugging power index
ISO.217
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Baseball selection index
BB/K.135
*Fiscal year 2025
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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
right-handed pitcher / right-handed hitter
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Blood type
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Draft Year
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Biography
Meiso High School -Chiba Lotte Marines (Draft 4 '19~)
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Titles won
Participation results
Season results
| Batting Average | .255 | GP | 35 |
|---|---|---|---|
| PA | 112 | AB | 106 |
| Hits | 27 | 2B | 2 |
| 3B | 0 | Home Runs | 7 |
| TB | 50 | RBI | 24 |
| Runs Scored | 11 | SO | 37 |
| BB | 5 | HBP | 0 |
| SAC | 0 | SF | 1 |
| Stolen Bases | 1 | CS | 1 |
| GIDP | 3 | SLG | .472 |
| OPS | .757 | ISO | .217 |
| ISOD | .031 | BB/K | .135 |
| BABIP | .317 | AB/HR | 15.14 |
Results by condition
hitter performance: By game
| date | AB | H | HR | R | RBI | SO | BB | HBP | SB | SAC | AVG | Batting results (video) |
|---|
| October | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | .000 |
|---|
| 10/5 | ![]() |
2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | .255 | Foul fly, struck out |
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| September | 36 | 9 | 0 | 2 | 2 | 8 | 2 | 0 | 1 | 0 | .250 |
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| August | 51 | 15 | 7 | 7 | 20 | 21 | 3 | 0 | 0 | 0 | .294 |
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| June | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .333 |
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| May | 14 | 2 | 0 | 2 | 2 | 7 | 0 | 0 | 0 | 0 | .143 |
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hitter performance: 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021 |
|
.207 | 78 | 228 | 203 | 42 | 3 | 1 | 9 | 74 | 20 | 20 | 53 | 25 | 0 | 0 | 0 | 0 | 1 | 5 | .365 | .658 | .158 | .087 | .472 | .234 | 22.56 |
| 2022 |
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.237 | 102 | 349 | 321 | 76 | 14 | 0 | 16 | 138 | 57 | 40 | 84 | 23 | 4 | 0 | 1 | 1 | 0 | 8 | .430 | .725 | .193 | .058 | .274 | .270 | 20.06 |
| 2023 |
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.235 | 115 | 474 | 421 | 99 | 21 | 0 | 14 | 162 | 57 | 46 | 122 | 43 | 5 | 0 | 5 | 0 | 0 | 7 | .385 | .695 | .150 | .075 | .352 | .293 | 30.07 |
| 2024 |
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.200 | 51 | 181 | 170 | 34 | 8 | 0 | 2 | 48 | 13 | 10 | 30 | 10 | 1 | 0 | 0 | 1 | 0 | 6 | .282 | .531 | .082 | .049 | .333 | .232 | 85.00 |
| 2025 |
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.255 | 35 | 112 | 106 | 27 | 2 | 0 | 7 | 50 | 24 | 11 | 37 | 5 | 0 | 0 | 1 | 1 | 1 | 3 | .472 | .757 | .217 | .031 | .135 | .317 | 15.14 |
| Overall record | .228 | 381 | 1344 | 1221 | 278 | 48 | 1 | 48 | 472 | 171 | 127 | 326 | 106 | 10 | 0 | 7 | 3 | 2 | 29 | .387 | .680 | .159 | .065 | .325 | .269 | 25.44 | |
2025/12/5 03:08 更新
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