Age: 32, 175 lbs, 5'10" Born: 9/1/1993, Kitakyushu, Japan Sal: N/A  Currently Released TRANSACTION REPORT 23 hoursEnters free-agent market. The Cubs declined Imanaga's three-year, $57.75 million option.
| | | | | | | | | | | | | | | | | | | | | | | | | |
| 2025 | CHC | 25 | 0 | 144.7 | 3.73 | 9 | 8 | 0 | 0 | 117 | 20 | 1 | 31 | 117 | 1 | 26 | 1 | 0 | 62 | 60 | 0 | 0.99 | 7.28 | 45.0 | 1.8 |
| 2024 | CHC | 29 | 0 | 173.3 | 2.91 | 15 | 3 | 0 | 0 | 149 | 23 | 1 | 27 | 174 | 3 | 28 | 3 | 0 | 66 | 56 | 0 | 1.02 | 9.03 | 75.0 | 2.6 |
| | | 54 | 0 | 318.0 | 3.32 | 24 | 11 | 0 | 0 | 266 | 43 | 2 | 58 | 291 | 4 | 54 | 4 | 0 | 128 | 116 | 0 | 1.00 | 8.16 | 120.0 | 2.2 |
| | | | | | | | | | | | | | | | | | | | | | | | |
| 10/6/2025 | MIL@ | L3 - 7 | 0 | 2.7 | 13.50 | 0 | 1 | 0 | 0 | 5 | 0 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 4 | 4 | 0 | 1.88 | 10.13 | 0.0 |
| 10/1/2025 | SD | L0 - 3 | 0 | 4.0 | 4.50 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 1 | 3 | 0 | 2 | 0 | 0 | 2 | 2 | 0 | 1.25 | 6.75 | 0.0 |
| 9/25/2025 | NYM | L5 - 8 | 0 | 5.7 | 12.71 | 0 | 1 | 0 | 0 | 9 | 2 | 0 | 2 | 3 | 0 | 1 | 0 | 0 | 8 | 8 | 0 | 1.76 | 4.76 | 0.0 |
| 9/19/2025 | CIN@ | L4 - 7 | 0 | 5.0 | 5.40 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 3 | 4 | 0 | 2 | 0 | 0 | 4 | 3 | 0 | 1.20 | 7.20 | 0.0 |
| 9/14/2025 | TB | W4 - 3 | 0 | 5.0 | 5.40 | 0 | 0 | 0 | 0 | 7 | 1 | 0 | 2 | 9 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 1.40 | 16.20 | 0.0 |
| 9/8/2025 | ATL@ | L1 - 4 | 0 | 6.0 | 4.50 | 0 | 1 | 0 | 0 | 5 | 1 | 0 | 1 | 4 | 0 | 0 | 0 | 0 | 3 | 3 | 0 | 0.83 | 6.00 | 0.0 |
| 9/2/2025 | ATL | W4 - 3 | 0 | 6.0 | 4.50 | 1 | 0 | 0 | 0 | 5 | 0 | 1 | 2 | 2 | 0 | 1 | 1 | 0 | 3 | 3 | 0 | 1.00 | 3.00 | 5.0 |
| 8/28/2025 | SF@ | L3 - 4 | 0 | 7.0 | 3.86 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 2 | 5 | 0 | 1 | 0 | 0 | 3 | 3 | 0 | 0.86 | 6.43 | 0.0 |
| 8/21/2025 | MIL | L1 - 4 | 0 | 7.0 | 2.57 | 0 | 1 | 0 | 0 | 3 | 0 | 0 | 1 | 5 | 0 | 2 | 0 | 0 | 2 | 2 | 0 | 0.71 | 6.43 | 0.0 |
| 8/16/2025 | PIT | W3 - 1 | 0 | 7.0 | 1.29 | 0 | 0 | 0 | 0 | 3 | 1 | 0 | 1 | 6 | 0 | 2 | 0 | 0 | 1 | 1 | 0 | 0.71 | 7.71 | 0.0 |
| | | | 0 | 55.3 | 5.82 | 1 | 4 | 0 | 0 | 49 | 6 | 1 | 17 | 44 | 0 | 11 | 1 | 0 | 33 | 32 | 0 | 1.16 | 7.46 | 5.0 |
| | | | |
| S. Imanag | P | CHC | 11/4/2025 | Enters free-agent market. |
| S. Imanag | P | CHC | 6/26/2025 | Activated for Thursday's start. |
| S. Imanag | P | CHC | 5/5/2025 | Goes on IL with hamstring strain. |
| S. Imanag | P | CHC | 1/10/2024 | Signs four-year, $53 million deal. |
| S. Imanag | P | CHC | 1/9/2024 | Agrees to terms with Cubs. |
| | | | | | |
| S. Imanag | P | CHC | 4/22/2025 | 5/19/2025 | +1 | Hits allowed |
| S. Imanag | P | CHC | 4/22/2025 | 5/19/2025 | +3 | Earned runs allowed |
Stars of the month
| | | | |
| March 18, 2025 | S. Imanag | CHC | P | NA |
| March 29, 2025 | S. Imanag | CHC | P | NA |
| April 04, 2025 | S. Imanag | CHC | P | NA |
| April 09, 2025 | S. Imanag | CHC | P | NA |
| April 15, 2025 | S. Imanag | CHC | P | NA |
| April 22, 2025 | S. Imanag | CHC | P | NA |
| April 29, 2025 | S. Imanag | CHC | P | NA |
| May 04, 2025 | S. Imanag | CHC | P | NA |
| June 26, 2025 | S. Imanag | CHC | P | NA |
| July 02, 2025 | S. Imanag | CHC | P | NA |
| July 08, 2025 | S. Imanag | CHC | P | NA |
| July 13, 2025 | S. Imanag | CHC | P | NA |
| July 19, 2025 | S. Imanag | CHC | P | NA |
| July 25, 2025 | S. Imanag | CHC | P | NA |
| July 30, 2025 | S. Imanag | CHC | P | NA |
| August 05, 2025 | S. Imanag | CHC | P | NA |
| August 10, 2025 | S. Imanag | CHC | P | NA |
| August 16, 2025 | S. Imanag | CHC | P | NA |
| August 21, 2025 | S. Imanag | CHC | P | NA |
| August 28, 2025 | S. Imanag | CHC | P | NA |
| September 02, 2025 | S. Imanag | CHC | P | NA |
| September 08, 2025 | S. Imanag | CHC | P | NA |
| September 14, 2025 | S. Imanag | CHC | P | NA |
| September 19, 2025 | S. Imanag | CHC | P | NA |
| September 25, 2025 | S. Imanag | CHC | P | NA |
| October 01, 2025 | S. Imanag | CHC | P | NA |
| October 06, 2025 | S. Imanag | CHC | P | NA |
| | | | | |
Stars of the week
| | | | |
| March 18, 2025 | S. Imanag | CHC | P | 2nd star |
| March 29, 2025 | S. Imanag | CHC | P | NA |
| April 04, 2025 | S. Imanag | CHC | P | 3rd star |
| April 09, 2025 | S. Imanag | CHC | P | NA |
| April 15, 2025 | S. Imanag | CHC | P | 2nd star |
| April 22, 2025 | S. Imanag | CHC | P | NA |
| April 29, 2025 | S. Imanag | CHC | P | 2nd star |
| May 04, 2025 | S. Imanag | CHC | P | Rookie star |
| June 26, 2025 | S. Imanag | CHC | P | 2nd star |
| July 02, 2025 | S. Imanag | CHC | P | NA |
| July 08, 2025 | S. Imanag | CHC | P | Rookie star |
| July 13, 2025 | S. Imanag | CHC | P | 3rd star |
| July 19, 2025 | S. Imanag | CHC | P | 2nd star |
| July 25, 2025 | S. Imanag | CHC | P | NA |
| July 30, 2025 | S. Imanag | CHC | P | NA |
| August 05, 2025 | S. Imanag | CHC | P | NA |
| August 10, 2025 | S. Imanag | CHC | P | NA |
| August 16, 2025 | S. Imanag | CHC | P | 3rd star |
| August 21, 2025 | S. Imanag | CHC | P | Rookie star |
| August 28, 2025 | S. Imanag | CHC | P | NA |
| September 02, 2025 | S. Imanag | CHC | P | NA |
| September 08, 2025 | S. Imanag | CHC | P | NA |
| September 14, 2025 | S. Imanag | CHC | P | NA |
| September 19, 2025 | S. Imanag | CHC | P | NA |
| September 25, 2025 | S. Imanag | CHC | P | NA |
| October 01, 2025 | S. Imanag | CHC | P | NA |
| October 06, 2025 | S. Imanag | CHC | P | NA |
| | | | | |
|