Top KBO Players by Earned Run Average – Season

Rank / Player Team ERA WHIP IP ER R H HR BB HB

1   Adam Oller
#33 - SP - RHP

Kia Tigers 2.51 0.94 93 ⅓ 26 27 60 6 28 6

2   Choi Min-seok
#68 - SP - RHP

Doosan Bears 2.57 1.18 80 ⅔ 23 29 60 3 35 4

3   Ryu Hyun-jin
#99 - SP - LHP

Hanwha Eagles 2.67 1.06 87 ⅔ 26 33 82 4 11 2

4   Gwak Been
#47 - SP - RHP

Doosan Bears 2.89 1.30 84 27 31 82 5 27 4

5   Kim Jin-uk
#15 - SP - LHP

Lotte Giants 3.06 1.21 82 ⅓ 28 39 75 9 25 3

6   Raúl Alcántara
#54 - SP - RHP

Kiwoom Heroes 3.12 1.09 98 34 35 94 13 13 2

7   James Naile
#40 - SP - RHP

Kia Tigers 3.15 1.05 94 ⅓ 33 33 82 4 17 10

8   Koo Chang-mo
#59 - SP - LHP

NC Dinos 3.36 1.16 80 ⅓ 30 34 71 9 22 3

9   Im Chan-kyu
#1 - SP - RHP

LG Twins 3.48 1.39 85 ⅓ 33 34 94 5 25 2

10   Wang Yan-cheng
#19 - SP - LHP

Hanwha Eagles 3.59 1.48 80 ⅓ 32 42 83 6 36 6
11   Anders Tolhurst LG Twins 3.73 1.18 82 34 34 75 6 22 7
12   Na Gyun-an Lotte Giants 3.75 1.37 81 ⅔ 34 38 87 11 25 2
13   Jack O'Loughlin Samsung Lions 3.86 1.26 77 33 36 62 7 35 9
14   Zach Logue Doosan Bears 4.15 1.34 82 ⅓ 38 41 97 9 13 5
15   Matthew Sauer KT Wiz 4.48 1.36 86 ⅓ 43 45 81 7 36 11
16   Ko Young-pyo KT Wiz 4.50 1.27 86 43 44 97 10 12 6
17   Park Se-woong Lotte Giants 4.52 1.49 77 ⅔ 39 44 84 6 32 6