most runs allowed by a relief pitcher in one game all-time

Bill Bernhard has given up the most runs by a relief pitcher in a game, with 18 runs versus the Boston Americans on May 2, 1901.

Interpreted as:

most runs allowed by a relief pitcher in one regular-season game all-time

	NAME	R	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	ER	HR	BB	HBP	GF	IBB	TBF	WP
1	Bill Bernhard B. Bernhard	18	5/2/1901	PHA	vs	BSA		0	15.75	0	0	0	0	8.0	19	14	0	3	0	1			0
2	Dutch Schesler D. Schesler	16	7/11/1931	PHN	vs	NYG		0	15.75	1	0	0	0	8.0	22	14	4	0	1	1		48	0
3	Johnny Stuart J. Stuart	16	6/22/1925	SLN	vs	PIT		0	11.88	0	0	0	0	8.1	16	11	4	5	1	1		50	0
4	Lefty O'Doul L. O'Doul	16	7/7/1923	BSA	@	CLE		0	9.00	0	0	0	0	3.0	11	3	0	8	0	0		27	0
5	Tommy Warren T. Warren	15	4/30/1944	BKN	@	NYG		0	19.80	2	0	0	0	5.0	13	11	2	6	0	1		35	1
6	Nels Potter N. Potter	15	8/13/1939	PHA	vs	NYY		0	13.50	0	0	0	0	6.0	17	9	4	4	1	1		41	0
7	Nelson Greene N. Greene	15	6/20/1925	BKN	@	PIT		0	20.25	0	0	0	0	6.2	18	15	3	3	0	1		40	1
8	Carl Cashion C. Cashion	15	5/29/1912	WSH	@	BSA		0		2	0	0	0	5.0	13		0	9	0	1		37	1
9	Bert Maxwell B. Maxwell	15	7/17/1908	PHA	vs	DET		0		6	0	0	0	7.0	17		0	7	0	1		41	0
10	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
11	Les McCrabb L. McCrabb	14	4/16/1942	PHA	@	BSA		0	31.50	0	0	0	0	4.0	14	14	2	2	1	1		29	1
12	Carl Doyle C. Doyle	14	6/8/1940	BKN	@	CIN		0	31.50	2	0	0	0	4.0	16	14	1	4	4	0		36	2
13	Red Evans R. Evans	14	7/1/1936	CWS	vs	DET		0	18.47	2	0	0	0	6.1	16	13	1	4	0	0		39	0
14	Eddie Rommel E. Rommel	14	7/10/1932	PHA	@	CLE	W	0	6.88	7	0	0	0	17.0	29	13	0	9	0	1		87	2
15	Elam Vangilder E. Vangilder	14	7/25/1920	SLA	@	DET		0	16.71	2	0	0	0	7.0	16	13	0	4	0	1		41	0
16	Bull Wagner B. Wagner	14	7/3/1913	BKN	vs	BSN		0	12.91	0	0	0	0	7.2	17	11	2	6	0	1		47	1
17	Jiggs Parson J. Parson	14	6/4/1911	BSN	@	CIN		0		1	0	0	0	5.0	11		1	7	2	1		31	0
18	Carl Lundgren C. Lundgren	14	7/3/1904	CHC	vs	SLN		0		1	0	0	0	7.0	16		1	2	0	1		39	0
19	Snake Wiltse S. Wiltse	14	8/11/1902	BAL	@	CLE	L	0	12.86	2	0	0	0	7.0	19	10	0	1	0	1			0
20	Doc Adkins D. Adkins	14	7/8/1902	BSA	vs	PHA		0	6.43	1	0	0	0	7.0	16	5	1	3	0	1			0
21	Jordan Yamamoto J. Yamamoto	13	9/9/2020	MIA	@	ATL		0	40.50	3	0	0	0	2.2	11	12	4	2	0	0	0	22	0
22	Ed Heusser E. Heusser	13	7/29/1936	SLN	@	BKN		0	14.40	0	0	0	0	5.0	11	8	0	3	0	1		31	3
23	Roxie Lawson R. Lawson	13	7/14/1931	CLE	@	NYY		0	27.00	3	0	0	0	4.0	12	12	2	7	0	1		31	0
24	Dan Dugan D. Dugan	13	6/5/1929	CWS	@	BSA		0	31.91	3	0	0	0	3.2	15	13	0	2	0	0		28	0
25	Buck Freeman B. Freeman	13	6/21/1921	CHC	@	SLN	L	0	20.65	1	0	0	0	5.2	11	13	1	7	0	1		33	1