Top KBO Players by Earned Run Average in 2019
| # | Player | Team | ERA | IP |
|---|---|---|---|---|
| 1 | Doosan | 2.03 | 155 | |
| 2 | SK | 2.21 | 130 ⅓ | |
| 3 | SK | 2.44 | 144 | |
| 4 | Kia | 2.56 | 151 ⅓ | |
| 5 | LG | 2.79 | 148 ⅓ | |
| 6 | NC | 2.90 | 142 ⅔ | |
| 7 | Kiwoom | 2.91 | 126 ⅔ | |
| 8 | LG | 3.04 | 142 | |
| 9 | Doosan | 3.07 | 132 | |
| 10 | SK | 3.52 | 120 | |
| 11 | KT | 3.64 | 143 ⅓ | |
| 12 | Kiwoom | 3.71 | 138 ⅓ | |
| 13 | Lotte | 3.71 | 148 | |
| 14 | KT | 3.72 | 145 ⅓ | |
| 15 | NC | 3.75 | 115 ⅓ | |
| 16 | Hanwha | 3.96 | 152 ⅓ | |
| 17 | Hanwha | 4.07 | 135 | |
| 18 | Doosan | 4.12 | 122 ⅓ | |
| 19 | Kiwoom | 4.28 | 117 ⅔ | |
| 20 | Lotte | 4.36 | 121 ⅔ | |
| 21 | Samsung | 4.40 | 118 ⅔ | |
| 22 | LG | 4.53 | 133 | |
| 23 | KT | 4.86 | 129 ⅔ | |
| 24 | Kia | 4.92 | 139 | |
| 25 | Kia | 5.17 | 127 |