Top KBO Players by Earned Run Average in 2019
| # | Player | Team | ERA | IP |
|---|---|---|---|---|
| 1 | LG | 1.70 | 100 ⅔ | |
| 2 | SK | 1.87 | 86 ⅔ | |
| 3 | NC | 1.88 | 91 | |
| 4 | Doosan | 2.02 | 98 | |
| 5 | LG | 2.59 | 93 ⅔ | |
| 6 | SK | 2.78 | 90 ⅔ | |
| 7 | Doosan | 3.00 | 84 | |
| 8 | Kiwoom | 3.16 | 94 | |
| 9 | SK | 3.43 | 78 ⅔ | |
| 10 | KT | 3.44 | 96 ⅔ | |
| 11 | Lotte | 3.59 | 72 ⅔ | |
| 12 | Doosan | 3.63 | 79 ⅓ | |
| 13 | Kia | 3.74 | 91 ⅓ | |
| 14 | NC | 3.75 | 84 | |
| 15 | LG | 3.86 | 81 ⅔ | |
| 16 | Hanwha | 3.87 | 93 | |
| 17 | Lotte | 3.90 | 90 | |
| 18 | Hanwha | 4.23 | 89 ⅓ | |
| 19 | KT | 4.30 | 83 ⅔ | |
| 20 | Hanwha | 4.37 | 80 ⅓ | |
| 21 | Kia | 4.57 | 84 ⅔ | |
| 22 | Samsung | 4.62 | 76 | |
| 23 | Kiwoom | 4.67 | 81 | |
| 24 | NC | 4.76 | 73 ⅔ | |
| 25 | KT | 4.81 | 82 ⅓ | |
| 26 | Kiwoom | 4.93 | 76 ⅔ | |
| 27 | Kia | 5.04 | 85 ⅔ |