Top KBO Players by Earned Run Average in 2019
| # | Player | Team | ERA | IP |
|---|---|---|---|---|
| 1 | Kia | 2.29 | 184 ⅔ | |
| 2 | LG | 2.55 | 180 ⅓ | |
| 3 | LG | 2.92 | 185 | |
| 4 | Kiwoom | 2.96 | 158 ⅓ | |
| 5 | NC | 3.05 | 177 ⅓ | |
| 6 | Kiwoom | 3.13 | 181 ⅓ | |
| 7 | Doosan | 3.25 | 166 ⅓ | |
| 8 | Kiwoom | 3.38 | 157 ⅓ | |
| 9 | Hanwha | 3.50 | 177 ⅓ | |
| 10 | Hanwha | 3.51 | 192 ⅓ | |
| 11 | KT | 3.62 | 184 | |
| 12 | Doosan | 3.64 | 163 ⅓ | |
| 13 | SK | 3.88 | 144 | |
| 13 | SK | 3.88 | 144 | |
| 15 | Doosan | 4.01 | 172 ⅔ | |
| 16 | Doosan | 4.07 | 148 ⅓ | |
| 17 | LG | 4.12 | 168 ⅓ | |
| 18 | Samsung | 4.24 | 157 | |
| 19 | Samsung | 4.77 | 145 ⅓ | |
| 20 | KT | 4.96 | 150 ⅔ |