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| Name | Team | Age |
| Ryosei Yamazaki | Retired (2025, Age 37) | Died (2056, Age 68) |
| Drafted | Position | Bats/Throws |
| Round 1, Pick 6 (2013) |
RF | B/R |
| League | Option Years
|
Majors Service Time |
| Santo Rodriguez League | 0 | 9 years (35 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 | 5/1/1988 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 1 |
| Alt Pos (LF) | Alt Pos (CF) | Alt Pos (3B) |
| (95.7 %) | (54.1 %) | (5.6 %) |
Stats | Splits | Playoffs | Positions | Improvements | Past Skills | Awards | Fielding | Game Log
| Year | Type
|
Chances
|
Active | GS | Injured | Contact vs R | Power vs R | Contact vs L | Power vs L | Speed | Arm | Range | Total |
| 2013 | Minors | 32.00 | 1 / 3 | 3 / 6 | 2 / 5 | 0 / 6 | 1 / 2 | 1 / 3 | 2 / 7 | 10 / 32 | |||
| 2013 | Majors | 18.84 | 85 | 10 | 0 | 0 / 5 | 0 / 1 | 0 / 1 | 0 / 2 | 0 / 2 | 1 / 3 | 1 / 4 | 2 / 18 |
| 2014 | Minors | 34.00 | 1 / 3 | 1 / 3 | 2 / 5 | 1 / 3 | 3 / 5 | 2 / 8 | 1 / 7 | 11 / 34 | |||
| 2015 | Minors | 54.00 | 0 / 8 | 1 / 9 | 2 / 4 | 2 / 10 | 0 / 7 | 3 / 8 | 1 / 8 | 9 / 54 | |||
| 2016 | Minors | 49.00 | 0 / 7 | 0 / 3 | 1 / 9 | 3 / 9 | 1 / 10 | 0 / 5 | 2 / 6 | 7 / 49 | |||
| 2017 | Majors | 57.40 | 162 | 100 | 0 | 0 / 8 | 1 / 9 | 0 / 8 | 1 / 12 | 1 / 9 | 2 / 6 | 0 / 5 | 5 / 57 |
| 2018 | Majors | 34.74 | 162 | 13 | 0 | 0 / 5 | 0 / 7 | 0 / 2 | 0 / 6 | 0 / 5 | 0 / 2 | 0 / 7 | 0 / 34 |
| 2019 | Majors | 49.23 | 162 | 70 | 0 | 0 / 6 | 0 / 5 | 0 / 7 | 0 / 9 | 0 / 8 | 0 / 9 | 1 / 5 | 1 / 49 |
| 2020 | Majors | 33.85 | 162 | 8 | 0 | 0 / 5 | 0 / 4 | 0 / 2 | 0 / 9 | 0 / 4 | 0 / 6 | 0 / 3 | 0 / 33 |
| 2021 | Majors | 26.13 | 162 | 7 | 0 | 0 / 3 | 1 / 7 | 0 / 3 | 1 / 2 | 0 / 2 | 0 / 3 | 0 / 6 | 2 / 26 |
| 2022 | Majors | 23.36 | 162 | 2 | 0 | -4 / 3 | -3 / 4 | -5 / 0 | -7 / 4 | -3 / 2 | -1 / 4 | -1 / 6 | -24 / 23 |
| 2023 | Minors | 3.00 | 0 / 1 | 0 / 1 | 0 / 0 | 0 / 0 | 0 / 1 | 0 / 0 | 0 / 0 | 0 / 3 | |||
| 2023 | Majors | 31.69 | 127 | 24 | 0 | -4 / 5 | -2 / 2 | -3 / 4 | -2 / 6 | -3 / 4 | -1 / 8 | -2 / 2 | -17 / 31 |
| 2024 | Majors | 32.87 | 162 | 21 | 0 | -4 / 5 | -3 / 6 | -3 / 0 | -3 / 8 | 0 / 3 | -1 / 6 | -4 / 4 | -18 / 32 |
| 2025 | Majors | 27.04 | 147 | 32 | 0 | -5 / 3 | -2 / 6 | -5 / 6 | -7 / 3 | -2 / 3 | -2 / 4 | -2 / 2 | -25 / 27 |
| Total | 1493 | 287 | 0 | -15 / 70 | -3 / 73 | -9 / 56 | -11 / 89 | -2 / 67 | 4 / 75 | -1 / 72 | -37 / 502 |
| Date | Transaction |
| 2025-11-01 | Ryosei Yamazaki has retired from the Seattle Pilots |
| 2025-04-18 | The Seattle Pilots have acquired Ryosei Yamazaki from the waiver wire. |
| 2025-03-25 | The Chicago Koalas have promoted Ken Kelleher to the major league team. The Chicago Koalas have designated Ryosei Yamazaki for assignment. |
| 2023-05-10 | The Chicago Koalas have promoted Ryosei Yamazaki to the major league team. The Chicago Koalas have designated Matt Risberg for assignment. |
| 2023-05-05 | The Chicago Koalas have acquired Ryosei Yamazaki from the waiver wire. |
| 2023-04-18 | The San Francisco Seals have waived Ryosei Yamazaki. |
| 2023-03-25 | The San Francisco Seals have designated Ryosei Yamazaki for assignment. |
| 2017-04-01 | The San Francisco Seals have promoted Ryosei Yamazaki to the major league team. The San Francisco Seals have designated Tomoki Nitta for assignment. |
| 2014-03-25 | The San Francisco Seals have sent Ryosei Yamazaki to the minors. |
| 2013-08-11 | The San Francisco Seals have promoted Ryosei Yamazaki to the major league team. The San Francisco Seals have promoted Doug McGowan to the major league team. |
| 2013-06-27 | The San Francisco Seals have sent Ryosei Yamazaki to the minors. |
| 2013-05-15 | The San Francisco Seals have promoted Ryosei Yamazaki to the major league team. |