Top KBO Players by Earned Run Average in 2021

# Player Team ERA IP
1 Won Tae-in Samsung 1.18 38
2 Ryan Carpenter Hanwha 1.27 35 ⅓
3 Andrew Suarez LG 1.49 36 ⅓
4 Odrisamer Despaigne KT 2.16 41 ⅔
5 David Buchanan Samsung 2.27 43 ⅔
6 Walker Lockett Doosan 2.48 36 ⅓
7 Casey Kelly LG 2.91 34
8 Choi Won-joon Doosan 2.94 33 ⅔
9 Park Jong-hun SSG 3.11 37 ⅔
10 Eric Jokisch Kiwoom 3.28 35 ⅔
11 Aaron Brooks Kia 3.38 42 ⅔
12 Choi Won-tae Kiwoom 3.48 31
13 Daniel Mengden Kia 3.57 35 ⅓
14 Ko Young-pyo KT 3.65 37
15 Dan Straily Lotte 3.73 31 ⅓
16 Drew Rucinski NC 3.82 33
17 Kim Min-woo Hanwha 3.86 32 ⅔
18 Moon Seung-won SSG 3.90 32 ⅓
19 Ben Lively Samsung 4.05 33 ⅓
20 Baek Jung-hyun Samsung 4.35 31
21 Nick Kingham Hanwha 4.59 33 ⅓
22 Park Se-woong Lotte 4.78 32