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| Name | Team | Age |
| Koichi Osaka | Retired (2024, Age 35) | 59 |
| Drafted | Position | Bats/Throws |
| Round 3, Pick 41 (2016) |
3B | R/R |
| League | Option Years
|
Majors Service Time |
| Reggie Smith League | 0 | 5 years (2 games) |
| Total Rating
|
Arm | Range |
| Contact vs R | Contact vs L | Speed |
| Power vs R | Power vs L | Bunting |
| Endurance | Velocity | Control |
| Leadership
|
Mentor vs RHP
|
Mentor vs LHP
|
| Health
|
Injured Days
|
Birthday |
| 0 | 3/14/1989 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 0 |
| Alt Pos (2B) | Alt Pos (SS) | Alt Pos (---) |
| (2.6 %) | (0.1 %) | (0.0 %) |
Stats | Splits | Playoffs | Positions | Improvements | Past Skills | Awards | Fielding | Game Log
| Year
|
Team | G | AB | R | H | 2B | 3B | HR | RBI | BB | SO | SB | CS | E | OPS | OBP | SLG | AVG |
| 2017 | CHA | 14 | 18 | 3 | 5 | 0 | 0 | 0 | 1 | 1 | 4 | 2 | 1 | 0 | .594 | .316 | .278 | .278 |
| 2018 | CHA | 8 | 12 | 3 | 3 | 1 | 0 | 0 | 1 | 3 | 4 | 2 | 0 | 0 | .771 | .438 | .333 | .250 |
| 2019 | CHA | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 |
| 2021 | CHA | 12 | 36 | 3 | 5 | 1 | 1 | 0 | 5 | 2 | 8 | 2 | 0 | 1 | .397 | .175 | .222 | .139 |
| 2022 | STL | 96 | 331 | 36 | 81 | 13 | 0 | 2 | 30 | 22 | 73 | 1 | 2 | 14 | .592 | .290 | .302 | .245 |
| 2023 | STL | 22 | 69 | 7 | 18 | 5 | 0 | 2 | 8 | 3 | 12 | 0 | 0 | 0 | .712 | .292 | .420 | .261 |
| 2024 | STL | 5 | 13 | 1 | 5 | 0 | 1 | 0 | 0 | 1 | 6 | 2 | 0 | 1 | .967 | .429 | .538 | .385 |
| Total | 157 | 479 | 53 | 117 | 20 | 2 | 4 | 45 | 32 | 107 | 9 | 3 | 16 | .610 | .291 | .319 | .244 |
| Date | Transaction |
| 2024-11-01 | Koichi Osaka has retired from the St. Louis Estonians |
| 2022-05-07 | The St. Louis Estonians have promoted Koichi Osaka to the major league team. The St. Louis Estonians have sent Mark Duser to the minors. |
| 2022-05-07 | The St. Louis Estonians have acquired Koichi Osaka from the waiver wire. |
| 2022-04-14 | The Chicago Werebears have waived Koichi Osaka. |
| 2022-04-09 | The Chicago Werebears have promoted Fred Davanon to the major league team. The Chicago Werebears have designated Koichi Osaka for assignment. |
| 2021-08-04 | The Chicago Werebears have promoted Koichi Osaka to the major league team. |
| 2019-04-10 | The Chicago Werebears have designated Koichi Osaka for assignment. |
| 2017-05-09 | The Chicago Werebears have promoted Koichi Osaka to the major league team. The Chicago Werebears have sent Craig McDonald to the minors. |
| 2017-05-09 | The Chicago Werebears have acquired Koichi Osaka from the waiver wire. |
| 2017-03-01 | The Oakland Farms Dairy have waived Koichi Osaka. |
| 2016-08-23 | The Oakland Farms Dairy have acquired Koichi Osaka from the waiver wire. |
| 2016-04-01 | The Washington OLD Crooks have waived Koichi Osaka. |