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| Name | Team | Age |
| Mike Heffernan |  Chicago White Stockings |
30 |
| Drafted | Position | Bats/Throws |
| Round 1, Pick 11 (2320) |
RP | L/L |
| League | Option Years
|
Majors Service Time |
| Nomar Garciaparra League | 0 | 4 years (110 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 | 9/21/2300 | |
| WS Rings | WS Appearances | LCS Appearances |
| 2 | 3 | 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 | Vs | G | IP | SO | BB | H | WHIP |
| 2322 | AHB | 1 | 2.0 | 0 | 1 | 4 | 2.50 |
| 2322 | HHB | 1 | 0.1 | 0 | 0 | 0 | 0.00 |
| 2322 | LHB | 1 | 0.1 | 0 | 0 | 1 | 3.00 |
| 2322 | RHB | 2 | 2.0 | 0 | 1 | 3 | 2.00 |
| 2324 | AHB | 4 | 3.2 | 5 | 2 | 3 | 1.36 |
| 2324 | HHB | 2 | 2.0 | 4 | 1 | 3 | 2.00 |
| 2324 | LHB | 5 | 2.1 | 4 | 0 | 3 | 1.29 |
| 2324 | RHB | 5 | 3.1 | 5 | 3 | 3 | 1.80 |
| 2326 | AHB | 36 | 44.2 | 39 | 13 | 37 | 1.12 |
| 2326 | HHB | 35 | 40.0 | 35 | 15 | 38 | 1.33 |
| 2326 | LHB | 38 | 20.2 | 17 | 7 | 20 | 1.31 |
| 2326 | RHB | 68 | 64.0 | 57 | 21 | 55 | 1.19 |
| 2327 | AHB | 14 | 26.0 | 16 | 11 | 21 | 1.23 |
| 2327 | HHB | 27 | 43.2 | 39 | 22 | 42 | 1.47 |
| 2327 | LHB | 23 | 13.0 | 12 | 2 | 9 | 0.85 |
| 2327 | RHB | 41 | 56.2 | 43 | 31 | 54 | 1.50 |
| 2328 | AHB | 29 | 30.1 | 22 | 15 | 26 | 1.35 |
| 2328 | HHB | 33 | 26.2 | 20 | 7 | 29 | 1.35 |
| 2328 | LHB | 34 | 13.1 | 8 | 9 | 13 | 1.65 |
| 2328 | RHB | 59 | 43.2 | 34 | 13 | 42 | 1.26 |
| 2329 | AHB | 24 | 26.2 | 26 | 6 | 30 | 1.35 |
| 2329 | HHB | 24 | 34.1 | 26 | 15 | 32 | 1.37 |
| 2329 | LHB | 26 | 12.0 | 8 | 7 | 14 | 1.75 |
| 2329 | RHB | 46 | 49.0 | 44 | 14 | 48 | 1.27 |
| 2330 | AHB | 22 | 28.2 | 20 | 8 | 22 | 1.05 |
| 2330 | HHB | 36 | 50.1 | 48 | 8 | 31 | 0.77 |
| 2330 | LHB | 33 | 19.1 | 16 | 3 | 16 | 0.98 |
| 2330 | RHB | 55 | 59.2 | 52 | 13 | 37 | 0.84 |
| Total | AHB | 130 | 162.0 | 128 | 56 | 143 | 1.23 |
| Total | HHB | 158 | 197.1 | 172 | 68 | 175 | 1.23 |
| Total | LHB | 160 | 81.0 | 65 | 28 | 76 | 1.28 |
| Total | RHB | 276 | 278.1 | 235 | 96 | 242 | 1.21 |
| Total | 288 | 359.1 | 300 | 124 | 318 | 1.23 |
| Date | Transaction |
| 2330-07-25 | Mike Heffernan of the Chicago White Stockings is injured and is expected to be out 23 days. |
| 2328-05-22 | Mike Heffernan of the Chicago White Stockings is injured and is expected to be out 23 days. |
| 2327-05-23 | Mike Heffernan of the Chicago White Stockings is injured and is expected to be out 17 days. |
| 2327-04-15 | Mike Heffernan of the Chicago White Stockings is injured and is expected to be out 23 days. |
| 2326-04-09 | The Chicago SouthSiders have promoted Jim Wilborn to the major league team. The Chicago SouthSiders have promoted Mike Heffernan to the major league team. |
| 2324-07-29 | The Chicago SouthSiders have sent Mike Heffernan to the minors. |
| 2324-07-13 | The Chicago SouthSiders have promoted Mike Heffernan to the major league team. |
| 2322-10-03 | The Chicago SouthSiders have sent Mike Heffernan to the minors. |
| 2322-09-26 | The Chicago SouthSiders have promoted Mike Heffernan to the major league team. |