Since 1946, Mike Oquist, Bill Travers and Al Jurisich are tied for giving up the most earned runs in a start, with 14 earned runs.

Interpreted as:

most earned runs in a regular-season start by a player since 1946

	NAME	ER	GS	DATE	TM		OPP	DEC	ERA	SO	CG	SHO	SV	IP	H	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Mike Oquist M. Oquist	14	1	8/3/1998	OAK	vs	NYY	L	25.20	3	0	0	0	5.0	16	14	4	3	0	0	0	32	0
2	Bill Travers B. Travers	14	1	8/14/1977	MIL	@	CLE	L	16.43	4	0	0	0	7.2	18	14	2	4	1	0	0	45	2
3	Al Jurisich A. Jurisich	14	1	6/28/1947	PHN	@	NYG	L	15.75	1	1	0	0	8.0	16	14	3	6	0	0		46	0
4	Ben Lively B. Lively	13	1	8/1/2023	CIN	@	CHC	L	29.25	2	0	0	0	4.0	13	13	4	2	1	0	0	27	0
5	Scott Kazmir S. Kazmir	13	1	7/10/2010	LAA	@	OAK	L	23.40	2	0	0	0	5.0	11	13	3	3	1	0	1	30	2
6	Jason Marquis J. Marquis	13	1	6/21/2006	STL	@	CWS	L	23.40	3	0	0	0	5.0	14	13	4	1	0	0	0	30	0
7	David Wells D. Wells	13	1	8/20/1992	TOR	@	MIL	L	27.00	1	0	0	0	4.1	11	13	1	4	2	0	0	29	0
8	Jesús Luzardo J. Luzardo	12	1	5/31/2025	PHI	vs	MIL	L	32.40	4	0	0	0	3.1	12	12	2	3	0	0	0	23	0
9	Bradley Blalock B. Blalock	12	1	5/10/2025	COL	vs	SDP	L	29.45	1	0	0	0	3.2	13	12	3	2	0	0	0	26	1
10	Masahiro Tanaka M. Tanaka	12	1	7/25/2019	NYY	@	BOS	L	32.40	4	0	0	0	3.1	12	12	2	3	0	0	0	25	0
11	A.J. Burnett	12	1	5/2/2012	PIT	@	STL	L	40.50	2	0	0	0	2.2	12	12	2	1	1	0	0	22	0
12	Randy Wolf R. Wolf	12	1	7/21/2010	MIL	@	PIT	L	19.06	4	0	0	0	5.2	13	12	2	2	0	0	0	31	0
13	Jason Marquis J. Marquis	12	1	7/18/2006	STL	vs	ATL	L	21.60	4	0	0	0	5.0	14	12	3	2	1	0	0	31	0
14	Shawn Chacon S. Chacon	12	1	6/7/2003	COL	vs	KCR	L	29.45	2	0	0	0	3.2	9	12	2	6	0	0	0	25	1
15	Jose Lima J. Lima	12	1	4/27/2000	HOU	vs	CHC	L	21.60	6	0	0	0	5.0	13	12	5	3	0	0	0	31	1
16	John Burkett J. Burkett	12	1	5/17/1999	TEX	vs	TBD	L	27.00	2	0	0	0	4.0	8	12	3	5	0	0	0	25	0
17	Jerry Augustine J. Augustine	12	1	5/11/1982	MIL	@	KCR	L	21.60	1	0	0	0	5.0	15	12	2	2	0	0	0	31	0
18	Karl Drews K. Drews	12	1	8/18/1949	SLA	vs	CLE	L	21.60	2	0	0	0	5.0	13	13	2	2	0	0		30	0
19	Paul Calvert P. Calvert	12	1	8/14/1949	WSH	@	BSA	L	19.06	3	0	0	0	5.2	14	12	1	4	0	0		34	1
20	Carl Scheib C. Scheib	12	1	7/22/1949	PHA	@	CWS	L	13.50	1	1	0	0	8.0	18	12	0	8	0	0		49	0
21	Tanner Houck T. Houck	11	1	5/12/2025	BOS	@	DET	L	42.43	0	0	0	0	2.1	9	11	2	3	1	0	0	20	1
22	Tanner Houck T. Houck	11	1	4/14/2025	BOS	@	TBR	L	42.43	1	0	0	0	2.1	10	12	2	2	0	0	0	20	1
23	Braxton Garrett B. Garrett	11	1	5/3/2023	MIA	vs	ATL	L	22.85	3	0	0	0	4.1	14	11	4	2	0	0	0	28	0
24	Luis Cessa L. Cessa	11	1	4/16/2023	CIN	vs	PHI	L	33.00	0	0	0	0	3.0	14	11	1	3	1	0	0	27	1
25	Kohei Arihara K. Arihara	11	1	9/10/2022	TEX	vs	TOR	L	33.00	1	0	0	0	3.0	12	11	2	5	0	0	0	26	0