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| Name | Team | Age |
| Jeff Gantenbein | Retired (2026, Age 39) | 66 |
| Drafted | Position | Bats/Throws |
| Round 3, Pick 44 (2005) |
RP | R/R |
| League | Option Years
|
Majors Service Time |
| Murray Maddux League | 0 | 13 years (68 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 | 5/21/1987 | |
| WS Rings | WS Appearances | LCS Appearances |
| 1 | 2 | 3 |
| 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 | POS | Team | G | GS | INN | TC | PO | A | E | DP | +/- | RF
|
FPCT |
| 2012 | P | CHN | 28 | 0 | 60.0 | 7 | 0 | 7 | 0 | 2 | -1 | 1.05 | 1.000 |
| 2013 | P | CHN | 66 | 0 | 163.0 | 22 | 2 | 19 | 1 | 2 | -2 | 1.16 | .955 |
| 2014 | P | CHN | 67 | 0 | 153.66 | 19 | 1 | 18 | 0 | 1 | +2 | 1.11 | 1.000 |
| 2015 | P | CHN | 60 | 0 | 168.33 | 21 | 2 | 18 | 1 | 1 | -2 | 1.07 | .952 |
| 2016 | P | CHN | 58 | 0 | 71.0 | 6 | 1 | 4 | 1 | 0 | 0 | 0.63 | .833 |
| 2017 | P | CHN | 36 | 36 | 208.33 | 27 | 3 | 24 | 0 | 0 | +2 | 1.17 | 1.000 |
| 2018 | P | CHN | 36 | 36 | 197.0 | 22 | 0 | 20 | 2 | 1 | -3 | 0.91 | .909 |
| 2019 | P | CHN | 36 | 36 | 211.33 | 20 | 3 | 15 | 2 | 1 | -2 | 0.77 | .900 |
| 2020 | P | CHN | 36 | 36 | 209.33 | 25 | 2 | 23 | 0 | 1 | 0 | 1.07 | 1.000 |
| 2021 | P | CHN | 36 | 36 | 213.33 | 27 | 2 | 25 | 0 | 2 | -2 | 1.14 | 1.000 |
| 2022 | P | CHN | 36 | 22 | 149.66 | 20 | 3 | 16 | 1 | 0 | 0 | 1.14 | .950 |
| 2023 | P | CHN | 39 | 2 | 54.33 | 9 | 2 | 7 | 0 | 0 | 0 | 1.49 | 1.000 |
| 2024 | P | CHN | 75 | 0 | 78.33 | 8 | 3 | 5 | 0 | 0 | -1 | 0.92 | 1.000 |
| 2025 | P | CHN | 36 | 0 | 38.33 | 4 | 0 | 4 | 0 | 0 | -2 | 0.94 | 1.000 |
| 2026 | P | CHN | 11 | 0 | 10.33 | 3 | 0 | 3 | 0 | 1 | -1 | 2.61 | 1.000 |
| Total | 656 | 204 | 1986.29 | 240 | 24 | 208 | 8 | 12 | -12 | 1.05 | .967 |
| Date | Transaction |
| 2026-11-01 | Jeff Gantenbein has retired from the Free Agency Pool |
| 2026-07-02 | The Chicago Cubbies have waived Jeff Gantenbein. |
| 2026-05-08 | The Chicago Cubbies have promoted Joey Krsnich to the major league team. The Chicago Cubbies have promoted Lefty Atkinson to the major league team. The Chicago Cubbies have designated Jeff Gantenbein for assignment. |
| 2026-04-25 | Jeff Gantenbein of the Chicago Cubbies is injured and is expected to be out 20 days. |
| 2025-04-14 | Jeff Gantenbein of the Chicago Cubbies is injured and is expected to be out 32 days. |
| 2022-08-17 | Jeff Gantenbein of the Chicago Cubbies is injured and is expected to be out 10 days. |
| 2016-04-09 | Jeff Gantenbein of the Chicago Cubbies is injured and is expected to be out 51 days. |
| 2012-07-16 | The Chicago Cubbies have promoted Jeff Gantenbein to the major league team. The Chicago Cubbies have designated Gene Rossy for assignment. |