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