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| Name | Team | Age |
| John Niekro | Retired (2034, Age 36) | 41 |
| Drafted | Position | Bats/Throws |
| Round 4, Pick 54 (2020) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Roberto Clemente League | 0 | 8 years (0 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 | 6/3/1998 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 1 |
| 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 | Vs | G | IP | SO | BB | H | WHIP |
| 2027 | AHB | 23 | 24.1 | 18 | 6 | 24 | 1.23 |
| 2027 | HHB | 35 | 39.1 | 28 | 10 | 43 | 1.35 |
| 2027 | LHB | 54 | 29.2 | 20 | 8 | 30 | 1.28 |
| 2027 | RHB | 52 | 34.0 | 26 | 8 | 37 | 1.32 |
| 2028 | AHB | 21 | 23.1 | 26 | 15 | 31 | 1.97 |
| 2028 | HHB | 41 | 41.0 | 31 | 26 | 43 | 1.68 |
| 2028 | LHB | 55 | 28.0 | 25 | 23 | 33 | 2.00 |
| 2028 | RHB | 56 | 36.1 | 32 | 18 | 41 | 1.62 |
| 2029 | AHB | 22 | 23.0 | 22 | 11 | 18 | 1.26 |
| 2029 | HHB | 40 | 40.0 | 37 | 11 | 36 | 1.18 |
| 2029 | LHB | 54 | 27.0 | 30 | 10 | 26 | 1.33 |
| 2029 | RHB | 57 | 36.0 | 29 | 12 | 28 | 1.11 |
| 2030 | AHB | 22 | 24.0 | 13 | 9 | 21 | 1.25 |
| 2030 | HHB | 47 | 45.2 | 40 | 18 | 56 | 1.62 |
| 2030 | LHB | 63 | 35.1 | 28 | 13 | 37 | 1.42 |
| 2030 | RHB | 63 | 34.1 | 25 | 14 | 40 | 1.57 |
| 2031 | AHB | 31 | 34.1 | 21 | 13 | 42 | 1.60 |
| 2031 | HHB | 44 | 43.0 | 46 | 20 | 37 | 1.33 |
| 2031 | LHB | 67 | 38.2 | 36 | 15 | 32 | 1.22 |
| 2031 | RHB | 71 | 38.2 | 31 | 18 | 47 | 1.68 |
| 2032 | AHB | 39 | 39.2 | 24 | 16 | 52 | 1.71 |
| 2032 | HHB | 43 | 43.0 | 31 | 29 | 39 | 1.58 |
| 2032 | LHB | 70 | 37.0 | 22 | 18 | 41 | 1.59 |
| 2032 | RHB | 77 | 45.2 | 33 | 27 | 50 | 1.69 |
| 2033 | AHB | 28 | 30.0 | 32 | 15 | 20 | 1.17 |
| 2033 | HHB | 40 | 39.2 | 32 | 18 | 32 | 1.26 |
| 2033 | LHB | 61 | 33.2 | 30 | 16 | 25 | 1.22 |
| 2033 | RHB | 63 | 36.0 | 34 | 17 | 27 | 1.22 |
| 2034 | AHB | 39 | 38.0 | 28 | 13 | 35 | 1.26 |
| 2034 | HHB | 48 | 47.0 | 38 | 33 | 51 | 1.79 |
| 2034 | LHB | 75 | 41.2 | 26 | 19 | 30 | 1.18 |
| 2034 | RHB | 79 | 43.1 | 40 | 27 | 56 | 1.92 |
| 2040 | AHB | 0 | 0.0 | 0 | 0 | 0 | 0.00 |
| 2040 | HHB | 0 | 0.0 | 0 | 0 | 0 | 0.00 |
| 2040 | LHB | 0 | 0.0 | 0 | 0 | 0 | 0.00 |
| 2040 | RHB | 0 | 0.0 | 0 | 0 | 0 | 0.00 |
| Total | AHB | 225 | 236.2 | 184 | 98 | 243 | 1.44 |
| Total | HHB | 338 | 338.2 | 283 | 165 | 337 | 1.48 |
| Total | LHB | 499 | 271.0 | 217 | 122 | 254 | 1.39 |
| Total | RHB | 518 | 304.1 | 250 | 141 | 326 | 1.53 |
| Total | 563 | 575.1 | 467 | 263 | 580 | 1.47 |
| Date | Transaction |
| 2034-11-01 | John Niekro has retired from the Cincinnati Twelves |
| 2033-05-12 | John Niekro of the Cincinnati Twelves is injured and is expected to be out 19 days. |
| 2031-09-23 | John Niekro of the Cincinnati Twelves is injured and is expected to be out 38 days. |
| 2029-05-24 | John Niekro of the Cincinnati Twelves is injured and is expected to be out 24 days. |
| 2027-04-01 | The Cincinnati Twelves have promoted John Niekro to the major league team. The Cincinnati Twelves have promoted Lena Sturdy to the major league team. |
| 2025-04-08 | The Cincinnati Twelves have acquired John Niekro from the waiver wire. |
| 2025-04-01 | The Cleveland Planktons have waived John Niekro. |
| 2022-04-22 | The Cleveland Planktons have acquired John Niekro from the waiver wire. |
| 2022-04-01 | The Arizona Lions have waived John Niekro. |
| 2022-03-25 | The Arizona Lions have acquired John Niekro from the waiver wire. |
| 2021-08-10 | The Detroit Autoworkers have waived John Niekro. |
| 2021-04-15 | The Detroit Autoworkers have acquired John Niekro from the waiver wire. |
| 2021-04-08 | The Philadelphia Continentals have waived John Niekro. |