most earned runs given up in one game with under 1 innings pitched all-time

Bubba Harris has given up the most earned runs in a game with fewer than 1.0 inning pitched, with 12 earned runs against the Red Sox on July 4, 1948.

Interpreted as:

most earned runs given up by a player in one regular-season game with under 1 innings pitched all-time

	NAME	ER	IP	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	H	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Bubba Harris B. Harris	12	0.2	7/4/1948	PHA	@	BSA	L	0	162.00	0	0	0	0	6	12	0	5	0	0		14	0
2	Jason Jennings J. Jennings	11	0.2	7/29/2007	HOU	vs	SDP	L	1	148.50	0	0	0	0	8	11	2	3	0	0	0	13	0
3	Carlos Martinez C. Martinez	10	0.2	6/2/2021	STL	@	LAD	L	1	135.00	1	0	0	0	6	10	0	4	0	0	0	12	0
4	Jeremy Guthrie J. Guthrie	10	0.2	4/8/2017	WSH	@	PHI	L	1	135.00	0	0	0	0	6	10	0	4	0	0	0	12	0
5	Luke Hudson L. Hudson	10	0.1	8/13/2006	KCR	@	CLE	L	1	270.00	1	0	0	0	8	11	1	3	0	0	0	13	0
6	Hunter Brown H. Brown	9	0.2	4/11/2024	HOU	@	KCR	L	1	121.50	0	0	0	0	11	9	1	1	0	0	0	14	0
7	Gus Varland G. Varland	9	0.2	5/15/2023	MIL	@	STL		0	121.50	1	0	0	0	6	9	2	3	0	0	0	11	0
8	Charlie Morton C. Morton	9	0.2	6/21/2015	PIT	@	WSH	L	1	121.50	1	0	0	0	8	9	2	1	0	0	0	11	0
9	Rick Porcello R. Porcello	9	0.2	4/20/2013	DET	@	LAA	L	1	121.50	0	0	0	0	9	9	1	1	0	0	0	11	1
10	Johnny Cueto J. Cueto	9	0.2	7/6/2009	CIN	@	PHI	L	1	121.50	1	0	0	0	5	9	2	3	1	0	0	11	0
11	Mark Redman M. Redman	9	0.1	9/23/2006	KCR	vs	DET	L	1	243.00	0	0	0	0	7	9	1	2	0	0	0	10	0
12	Juan Cruz J. Cruz	9	0.2	5/17/2006	ARI	vs	SDP	L	1	121.50	1	0	0	0	5	9	0	3	2	0	0	12	0
13	Travis Harper T. Harper	9	0.2	6/21/2005	TBD	@	NYY	L	0	121.50	0	0	0	0	8	9	4	1	0	1	1	11	0
14	Ramon Ortiz R. Ortiz	9	0.2	9/3/2000	ANA	@	CWS		1	121.50	0	0	0	0	8	9	0	2	0	0	0	12	1
15	Orlando Hernandez O. Hernandez	9	0.2	6/18/2000	NYY	vs	CWS	L	1	121.50	1	0	0	0	6	9	1	3	0	0	0	11	0
16	Jose Mesa J. Mesa	9	0.1	5/28/2000	SEA	@	TBD	L	0	243.00	0	0	0	0	7	9	1	2	0	0	0	10	0
17	Brett Merriman B. Merriman	9	0.2	4/25/1993	MIN	vs	DET		0	121.50	0	0	0	0	5	9	0	4	1	0	1	12	0
18	Bob Gibson B. Gibson	9	0.2	6/29/1967	STL	vs	SFG	L	1	121.50	1	0	0	0	7	9	0	2	0	0	1	11	0
19	Hank Borowy H. Borowy	9	0.0	8/18/1951	DET	@	SLA		0		0	0	0	0	5	9	1	4	0	0	0	9	0
20	Lou Brissie L. Brissie	9	0.1	6/18/1950	PHA	@	CLE	L	1	243.00	0	0	0	0	3	9	0	6	0	0	0	10	0
21	Fred Heimach F. Heimach	9	0.1	7/17/1933	BKN	@	PIT		0	243.00	0	0	0	0	7	9	0	1	0	0		10	0
22	Leo Mangum L. Mangum	9	0.2	7/28/1924	CWS	vs	NYY	L	1	121.50	1	0	0	0	8	9	0	1	0	0		11	0
23	Brandon Pfaadt B. Pfaadt	8	0.0	5/31/2025	AZ	vs	WSH	L	1		0	0	0	0	6	8	0	0	2	0	0	8	0
24	Ryan Pressly R. Pressly	8	0.0	5/6/2025	CHC	vs	SFG	L	0		0	0	0	0	5	9	0	1	1	0	0	8	0
25	Drew Thorpe D. Thorpe	8	0.2	7/26/2024	CWS	vs	SEA	L	1	108.00	1	0	0	0	6	8	3	2	0	0	0	10	0