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| Name | Team | Age |
| Guillermo Campbell | Retired (2026, Age 35) | Died (2063, Age 72) |
| Drafted | Position | Bats/Throws |
| Round 2, Pick 26 (2012) |
SP | R/R |
| League | Option Years
|
Majors Service Time |
| Goose Goslin League | 0 | 11 years (57 games) |
| Total Rating
|
Arm | Range |
| Contact vs R | Contact vs L | Speed |
| Power vs R | Power vs L | Bunting |
| Endurance | Velocity | Control |
| Leadership
|
Mentor Value
|
|
| Health
|
Injured Days
|
Birthday |
| 0 | 1/13/1991 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 2 | 4 |
| Alt Pos (---) | Alt Pos (---) | Alt Pos (---) |
| (0.0 %) | (0.0 %) | (0.0 %) |
Stats | Splits | Playoffs | Energy | Improvements | Past Skills | Awards | Batting | Fielding | Game Log
| Year
|
Team | W | L | G | GS | CG | SHO | SV | BS | IP | H | R | ER | HBP | BB | SO | WHIP | ERA |
| 2015 | OAK | 5 | 13 | 40 | 17 | 0 | 0 | 0 | 1 | 113.1 | 160 | 104 | 89 | 10 | 54 | 78 | 1.89 | 7.07 |
| 2016 | OAK | 8 | 12 | 47 | 17 | 2 | 1 | 0 | 2 | 138.2 | 170 | 79 | 75 | 0 | 55 | 91 | 1.62 | 4.87 |
| 2017 | OAK | 8 | 8 | 47 | 19 | 2 | 0 | 1 | 1 | 158.1 | 169 | 95 | 78 | 2 | 51 | 125 | 1.39 | 4.43 |
| 2018 | OAK | 14 | 5 | 43 | 19 | 5 | 2 | 2 | 2 | 160.1 | 156 | 77 | 71 | 3 | 57 | 136 | 1.33 | 3.99 |
| 2019 | OAK | 14 | 11 | 34 | 31 | 3 | 1 | 0 | 0 | 226.0 | 202 | 94 | 86 | 3 | 71 | 172 | 1.21 | 3.42 |
| 2020 | OAK | 17 | 6 | 36 | 27 | 10 | 1 | 0 | 0 | 218.1 | 156 | 66 | 61 | 2 | 74 | 164 | 1.05 | 2.51 |
| 2021 | OAK | 8 | 10 | 38 | 19 | 1 | 0 | 0 | 0 | 152.0 | 143 | 76 | 62 | 2 | 70 | 111 | 1.40 | 3.67 |
| 2022 | OAK | 14 | 6 | 36 | 20 | 1 | 0 | 0 | 0 | 168.1 | 159 | 91 | 84 | 1 | 64 | 128 | 1.32 | 4.49 |
| 2023 | OAK | 10 | 7 | 26 | 19 | 2 | 2 | 0 | 0 | 139.1 | 125 | 61 | 59 | 3 | 41 | 97 | 1.19 | 3.81 |
| 2024 | OAK | 13 | 7 | 25 | 25 | 4 | 2 | 0 | 0 | 176.0 | 176 | 79 | 71 | 1 | 62 | 140 | 1.35 | 3.63 |
| 2025 | OAK | 8 | 11 | 25 | 25 | 1 | 0 | 0 | 0 | 159.0 | 181 | 105 | 99 | 4 | 61 | 128 | 1.52 | 5.60 |
| 2026 | OAK-MON | 0 | 2 | 6 | 2 | 0 | 0 | 0 | 0 | 12.2 | 19 | 14 | 13 | 0 | 8 | 11 | 2.13 | 9.24 |
| 2065 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 | |
| Total | 119 | 98 | 403 | 240 | 31 | 9 | 3 | 6 | 1822.1 | 1816 | 941 | 848 | 31 | 668 | 1381 | 1.36 | 4.19 |
| Date | Transaction |
| 2026-11-01 | Guillermo Campbell has retired from the Montreal CoMpToNz ExPoZ |
| 2026-10-01 | The Montreal CoMpToNz ExPoZ have designated Guillermo Campbell for assignment. |
| 2026-10-01 | The Montreal CoMpToNz ExPoZ have promoted Guillermo Campbell to the major league team. The Montreal CoMpToNz ExPoZ have sent Babe Ortiz to the minors. |
| 2026-05-30 | The Montreal CoMpToNz ExPoZ have designated Guillermo Campbell for assignment. |
| 2026-05-29 | The Montreal CoMpToNz ExPoZ have acquired Guillermo Campbell from the waiver wire. |
| 2026-05-25 | The Oakland Twins have promoted Ty Young to the major league team. The Oakland Twins have waived Guillermo Campbell. |
| 2021-10-04 | Guillermo Campbell of the Oakland Twins is injured and is expected to be out 11 days. |
| 2020-08-10 | Guillermo Campbell of the Oakland Twins is injured and is expected to be out 17 days. |
| 2015-05-14 | Guillermo Campbell of the Oakland Twins is injured and is expected to be out 22 days. |
| 2015-04-01 | The Oakland Twins have promoted Guillermo Campbell to the major league team. |