Michael Kopech allowed his most earned runs in a game against the Rockies on August 18, 2023, with 9 earned runs.

Interpreted as:

Michael Kopech most er allowed in a regular-season game

	NAME	ER	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Michael Kopech M. Kopech	9	8/18/2023	CWS	@	COL	L	1	20.25	1	0	0	0	4.0	6	9	3	4	0	0	0	22	0
2	Michael Kopech M. Kopech	7	4/3/2023	CWS	vs	SFG	L	1	13.50	5	0	0	0	4.2	8	7	5	3	0	0	0	25	0
3	Michael Kopech M. Kopech	7	9/5/2018	CWS	vs	DET	L	1	18.90	6	0	0	0	3.1	9	7	4	1	0	0	0	20	1
4	Michael Kopech M. Kopech	6	7/5/2022	CWS	vs	MIN	L	1	11.57	5	0	0	0	4.2	8	6	4	4	0	0	0	26	0
5	Michael Kopech M. Kopech	5	4/21/2023	CWS	@	TBR		1	9.00	9	0	0	0	5.0	6	5	1	4	0	0	0	25	0
6	Michael Kopech M. Kopech	5	6/1/2022	CWS	@	TOR	L	1	15.00	4	0	0	0	3.0	6	5	2	4	0	0	0	19	0
7	Michael Kopech M. Kopech	5	8/26/2021	CWS	@	TOR		0	45.00	1	0	0	0	1.0	4	5	1	0	1	0	0	8	0
8	Michael Kopech M. Kopech	5	7/31/2021	CWS	vs	CLE	L	0	45.00	1	0	0	0	1.0	5	5	0	1	0	0	0	9	0
9	Michael Kopech M. Kopech	4	7/7/2024	CWS	@	MIA	L	0	54.00	0	0	0	0	0.2	2	4	1	2	0	1	1	6	0
10	Michael Kopech M. Kopech	4	9/15/2023	CWS	vs	MIN		0	36.00	2	0	0	0	1.0	5	4	0	0	0	1	0	8	0
11	Michael Kopech M. Kopech	4	8/28/2023	CWS	@	BAL	L	1	9.00	5	0	0	0	4.0	7	4	0	4	0	0	0	23	1
12	Michael Kopech M. Kopech	4	8/11/2023	CWS	vs	MIL		1	8.31	4	0	0	0	4.1	5	4	1	5	0	0	0	23	1
13	Michael Kopech M. Kopech	4	7/25/2023	CWS	vs	CHC	L	1	7.20	5	0	0	0	5.0	9	5	3	1	0	0	0	25	0
14	Michael Kopech M. Kopech	4	7/14/2023	CWS	@	ATL	L	1	54.00	0	0	0	0	0.2	1	4	1	4	1	0	0	8	1
15	Michael Kopech M. Kopech	4	5/29/2023	CWS	vs	LAA	L	1	8.31	10	0	0	0	4.1	5	4	2	2	2	0	0	23	2
16	Michael Kopech M. Kopech	4	5/7/2023	CWS	@	CIN	W	1	6.00	2	0	0	0	6.0	8	4	4	1	1	0	0	28	1
17	Michael Kopech M. Kopech	4	4/26/2023	CWS	@	TOR	L	1	7.20	4	0	0	0	5.0	6	4	0	2	2	0	0	23	0
18	Michael Kopech M. Kopech	4	8/22/2022	CWS	@	KCR		1		0	0	0	0	0.0	1	4	0	2	1	0	0	4	0
19	Michael Kopech M. Kopech	4	8/6/2022	CWS	@	TEX	L	1	10.80	4	0	0	0	3.1	5	4	1	2	0	0	0	17	0
20	Michael Kopech M. Kopech	4	6/19/2022	CWS	@	HOU	L	1	7.20	4	0	0	0	5.0	7	4	2	1	0	0	0	22	0
21	Michael Kopech M. Kopech	4	9/4/2021	CWS	@	KCR		0	27.00	3	0	0	0	1.1	4	4	2	0	0	0	0	8	0
22	Michael Kopech M. Kopech	3	6/10/2024	CWS	@	SEA		0	40.50	2	0	0	0	0.2	4	3	0	1	1	0	0	8	0
23	Michael Kopech M. Kopech	3	5/25/2024	CWS	vs	BAL	L	0	40.50	1	0	0	0	0.2	3	3	2	0	0	0	0	5	0
24	Michael Kopech M. Kopech	3	7/30/2023	CWS	vs	CLE	L	1	5.40	2	0	0	0	5.0	4	3	2	5	0	0	0	23	1
25	Michael Kopech M. Kopech	3	6/21/2023	CWS	vs	TEX	L	1	6.75	5	0	0	0	4.0	4	3	1	3	0	0	0	19	1