Luis Castillo career ERA
3.73Career Regular Season
Luis Castillo has a career ERA of 3.73 over 10 regular seasons.
- Best season on file: 2.99 in 2022.
- Most recent: 5.62 in 2026.
Average of 10 regular seasons, 2017 through 2026. Figures come from ESPN's box scores and were last read on September 21, 2026.
| GP: Games the player appeared in, however briefly. | W: Games in which this pitcher was credited with the win. | L: Games in which this pitcher was charged with the loss. | ERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent. | IP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs. | K: Batters this pitcher struck out. | BB: Times the batter reached first base on four balls. | WHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite. | SV: Games finished by protecting a narrow lead to the last out. | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 2017 |  CIN | 15 | 3 | 7 | 3.12 | 89.1 | 98 | 32 | 1.07 | 0 |
| 2018 | CIN | 31 | 10 | 12 | 4.30 | 169.2 | 165 | 49 | 1.22 | 0 |
| 2019 | CIN | 32 | 15 | 8 | 3.40 | 190.2 | 226 | 79 | 1.14 | 0 |
| 2020 | CIN | 12 | 4 | 6 | 3.21 | 70.0 | 89 | 24 | 1.23 | 0 |
| 2021 | CIN | 33 | 8 | 16 | 3.98 | 187.2 | 192 | 75 | 1.36 | 0 |
| 2022 |  CIN/SEA | 25 | 8 | 6 | 2.99 | 150.1 | 167 | 45 | 1.08 | 0 |
| 2023 | SEA | 33 | 14 | 9 | 3.34 | 197.0 | 219 | 56 | 1.10 | 0 |
| 2024 | SEA | 30 | 11 | 12 | 3.64 | 175.1 | 175 | 47 | 1.17 | 0 |
| 2025 | SEA | 32 | 11 | 8 | 3.54 | 180.2 | 162 | 46 | 1.18 | 0 |
| 2026 |  SEA/CHW | 28 | 4 | 11 | 5.62 | 129.2 | 112 | 43 | 1.47 | 0 |
What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV
