most earned runs in a single game since 1945

Since 1945, 4 pitchers are tied for giving up the most earned runs in a game, with 14 earned runs. The first three are Vin Mazzaro on May 16, 2011, Mike Oquist on August 3, 1998 and Bill Travers on August 14, 1977.

Interpreted as:

most earned runs by a player in a single regular-season game since 1945

	NAME	ER	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Vin Mazzaro V. Mazzaro	14	5/16/2011	KCR	vs	CLE		0	54.00	2	0	0	0	2.1	11	14	1	3	0	0	0	21	1
2	Mike Oquist M. Oquist	14	8/3/1998	OAK	vs	NYY	L	1	25.20	3	0	0	0	5.0	16	14	4	3	0	0	0	32	0
3	Bill Travers B. Travers	14	8/14/1977	MIL	@	CLE	L	1	16.43	4	0	0	0	7.2	18	14	2	4	1	0	0	45	2
4	Al Jurisich A. Jurisich	14	6/28/1947	PHN	@	NYG	L	1	15.75	1	1	0	0	8.0	16	14	3	6	0	0		46	0
5	Ben Lively B. Lively	13	8/1/2023	CIN	@	CHC	L	1	29.25	2	0	0	0	4.0	13	13	4	2	1	0	0	27	0
6	Scott Kazmir S. Kazmir	13	7/10/2010	LAA	@	OAK	L	1	23.40	2	0	0	0	5.0	11	13	3	3	1	0	1	30	2
7	Jason Marquis J. Marquis	13	6/21/2006	STL	@	CWS	L	1	23.40	3	0	0	0	5.0	14	13	4	1	0	0	0	30	0
8	David Wells D. Wells	13	8/20/1992	TOR	@	MIL	L	1	27.00	1	0	0	0	4.1	11	13	1	4	2	0	0	29	0
9	Jesús Luzardo J. Luzardo	12	5/31/2025	PHI	vs	MIL	L	1	32.40	4	0	0	0	3.1	12	12	2	3	0	0	0	23	0
10	Bradley Blalock B. Blalock	12	5/10/2025	COL	vs	SDP	L	1	29.45	1	0	0	0	3.2	13	12	3	2	0	0	0	26	1
11	Jordan Yamamoto J. Yamamoto	12	9/9/2020	MIA	@	ATL		0	40.50	3	0	0	0	2.2	11	13	4	2	0	0	0	22	0
12	Masahiro Tanaka M. Tanaka	12	7/25/2019	NYY	@	BOS	L	1	32.40	4	0	0	0	3.1	12	12	2	3	0	0	0	25	0
13	A.J. Burnett	12	5/2/2012	PIT	@	STL	L	1	40.50	2	0	0	0	2.2	12	12	2	1	1	0	0	22	0
14	Randy Wolf R. Wolf	12	7/21/2010	MIL	@	PIT	L	1	19.06	4	0	0	0	5.2	13	12	2	2	0	0	0	31	0
15	Jason Marquis J. Marquis	12	7/18/2006	STL	vs	ATL	L	1	21.60	4	0	0	0	5.0	14	12	3	2	1	0	0	31	0
16	Shawn Chacon S. Chacon	12	6/7/2003	COL	vs	KCR	L	1	29.45	2	0	0	0	3.2	9	12	2	6	0	0	0	25	1
17	Jose Lima J. Lima	12	4/27/2000	HOU	vs	CHC	L	1	21.60	6	0	0	0	5.0	13	12	5	3	0	0	0	31	1
18	John Burkett J. Burkett	12	5/17/1999	TEX	vs	TBD	L	1	27.00	2	0	0	0	4.0	8	12	3	5	0	0	0	25	0
19	Jerry Augustine J. Augustine	12	5/11/1982	MIL	@	KCR	L	1	21.60	1	0	0	0	5.0	15	12	2	2	0	0	0	31	0
20	Karl Drews K. Drews	12	8/18/1949	SLA	vs	CLE	L	1	21.60	2	0	0	0	5.0	13	13	2	2	0	0		30	0
21	Paul Calvert P. Calvert	12	8/14/1949	WSH	@	BSA	L	1	19.06	3	0	0	0	5.2	14	12	1	4	0	0		34	1
22	Carl Scheib C. Scheib	12	7/22/1949	PHA	@	CWS	L	1	13.50	1	1	0	0	8.0	18	12	0	8	0	0		49	0
23	Bubba Harris B. Harris	12	7/4/1948	PHA	@	BSA	L	0	162.00	0	0	0	0	0.2	6	12	0	5	0	0		14	0
24	Russ Christopher R. Christopher	12	7/7/1945	PHA	@	CWS	L	1	13.50	1	1	0	0	8.0	18	12	0	2	1	0		44	0
25	Bobo Newsom B. Newsom	12	6/24/1945	PHA	@	NYY	L	1	13.50	4	1	0	0	8.0	15	13	3	4	0	0		43	0