| W | L | ERA | G | GS | SV | IP | SO | WHIP | |
|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 0 | 4.08 | 7 | 5 | 0 | 17.2 | 26 | 1.53 |
| Career Minors | 1 | 3 | 4.17 | 18 | 16 | 0 | 49.2 | 56 | 1.35 |
| G | W-L | ERA | IP | SO | WHIP | |
|---|---|---|---|---|---|---|
| 2026 | 7 | 1-0 | 4.08 | 17.2 | 26 | 1.53 |
| Career Minors | 18 | 1-3 | 4.17 | 49.2 | 56 | 1.35 |
| Season | Tm | LG | L | W | L | ERA | G | GS | SV | IP | H | R | ER | HR | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 2 Teams | Minors | 0 | 3 | 4.22 | 11 | 11 | 0 | 32.0 | 25 | 20 | 15 | 4 | 15 | 30 | 1.25 | |
| 2025 | DSL Royals Fortuna | DSL | ROK | 0 | 2 | 3.57 | 6 | 6 | 0 | 17.2 | 13 | 10 | 7 | 3 | 6 | 18 | 1.08 |
| 2025 | DSL Royals Ventura | DSL | ROK | 0 | 1 | 5.02 | 5 | 5 | 0 | 14.1 | 12 | 10 | 8 | 1 | 9 | 12 | 1.47 |
| 2025 | 2 Teams | ROK | 0 | 3 | 4.22 | 11 | 11 | 0 | 32.0 | 25 | 20 | 15 | 4 | 15 | 30 | 1.25 | |
| 2026 | ACL Royals | ACL | ROK | 1 | 0 | 4.08 | 7 | 5 | 0 | 17.2 | 12 | 8 | 8 | 1 | 15 | 26 | 1.53 |
| 3 Teams | ROK | 1 | 3 | 4.17 | 18 | 16 | 0 | 49.2 | 37 | 28 | 23 | 5 | 30 | 56 | 1.35 | ||
| Career Minors | 3 Teams | 1 | 3 | 4.17 | 18 | 16 | 0 | 49.2 | 37 | 28 | 23 | 5 | 30 | 56 | 1.35 |
| Team | Date | Transaction |
|---|---|---|
|
04/30/2026 | RHP Keisther Castillo assigned to ACL Royals from DSL Royals Ventura. |
|
07/20/2025 | RHP Keisther Castillo assigned to DSL Royals Ventura from DSL Royals Fortuna. |
|
05/30/2025 | RHP Keisther Castillo assigned to DSL Royals Fortuna from DSL Royals Ventura. |
|
|
04/25/2025 | RHP Keisther Castillo assigned to DSL Royals Ventura. |
|
01/17/2025 | Kansas City Royals signed free agent RHP Keisther Castillo to a minor league contract. |
|
05/03/2024 | Orange-North activated RHP Keisther Castillo. |
