Terrible hitting pitchers: like Dean Chance.

In 1890 pitchers were almost excused as batters but unfortunately it didn't happen.

Negative 25 OPS+

86 found, all pitchers. ALL.

https://www.sports-reference.com/stathead/tiny/bjBrC

For combined seasons, since 1903, Playing in the AL or NL, in the regular season, requiring Plate Appearances >= 250 and Adjusted OPS+ <= -25, sorted by ascending Adjusted OPS+.

Sorting ascending puts the worst OPS+ at the top. At least negative 40 OPS+:

Rk	Player	OPS+	PA	From	To	AB	R	1B	2B	3B	HR	RBI	BB	SO	BA	OBP	SLG	OPS
1	Mark Clark	-54	280	1991	1999	242	7	10	3	0	1	9	8	106	.058	.088	.083	.170
2	Doug Davis	-49	466	2000	2011	412	12	28	4	2	0	13	4	175	.083	.093	.102	.195
3	Ben Sheets	-47	513	2001	2012	449	12	31	3	0	0	12	19	212	.076	.113	.082	.196
4	Charlie Morton	-47	370	2008	2021	321	9	22	5	0	0	7	3	170	.084	.092	.100	.192
5	Dean Chance	-46	759	1961	1971	662	17	42	2	0	0	16	30	420	.066	.113	.069	.183
6	Bartolo Colon	-46	326	1997	2018	299	11	20	4	0	1	11	1	166	.084	.092	.107	.199
7	Matt Garza	-45	314	2007	2017	274	7	19	3	0	0	4	6	155	.080	.110	.091	.201
8	Mike Bielecki	-44	331	1984	1997	282	11	22	0	0	0	13	14	144	.078	.122	.078	.200
9	Chase Anderson	-44	312	2014	2024	275	6	23	2	0	0	10	4	146	.091	.110	.098	.209
10	Johnny Broaca	-43	277	1934	1939	254	10	23	0	0	0	9	10	119	.091	.125	.091	.216
11	Dave Wickersham	-42	362	1960	1969	324	9	25	3	0	0	10	9	108	.086	.111	.096	.206
12	Tony Armas	-42	299	1999	2008	268	6	23	2	1	0	10	4	99	.097	.110	.112	.222
13	Aaron Harang	-41	747	2002	2015	670	16	56	8	0	1	21	5	294	.097	.106	.113	.220
14	Al Benton	-41	579	1934	1952	512	22	43	7	0	0	14	7	200	.098	.112	.111	.223
15	Aníbal Sánchez	-40	400	2006	2019	346	8	27	1	1	0	8	17	169	.084	.127	.092	.219

#12 Tony Armas is the pitching son of the hitting Tony Armas (led AL in HR in 1984: 43).

19 of the 86 hit at least one Home Run. 8 hit more than one HR:

Rk	Player	HR	PA	OPS+	From	To	AB	R	H	1B	2B	3B	RBI	BB	SO	BA	OBP	SLG	OPS
1	George Brunet	3	459	-27	1956	1971	418	23	37	29	5	0	12	15	220	.089	.126	.122	.248
2	Gio González	3	475	-34	2010	2019	410	16	37	27	7	0	17	9	190	.090	.118	.129	.247
3	Clem Labine	3	257	-30	1950	1962	227	12	17	11	3	0	11	15	121	.075	.136	.128	.264
4	Miguel Batista	2	351	-37	1992	2012	311	20	28	21	5	0	9	11	173	.090	.121	.125	.246
5	Dustin Hermanson	2	384	-27	1995	2005	322	14	30	23	5	0	10	20	161	.093	.151	.127	.278
6	Sandy Koufax	2	858	-26	1955	1966	776	26	75	64	9	0	28	43	386	.097	.145	.116	.261
7	Terry Mulholland	2	687	-25	1986	2006	619	26	69	53	13	1	23	13	281	.111	.131	.145	.276
8	Carl Willey	2	294	-25	1958	1965	263	9	26	18	5	1	9	7	143	.099	.122	.148	.271

Labine and Koufax were teammates on the Brooklyn/LA Dodgers.

https://www.baseball-reference.com/players/event_hr.fcgi?id=labincl01&t=b

All three of Labinine's HR were hit in 1955, one in Brooklyn.

https://www.baseball-reference.com/players/event_hr.fcgi?id=koufasa01&t=b

Both Koufax two HR were in Milwaukee against the Braves: Spahn 1962, Lemaster 1963.

18 of the 86 had at least 500 PA:

Rk	Player	PA	OPS+	From	To	AB	R	H	2B	3B	HR	RBI	BB	SO	BA	OBP	SLG	OPS
1	Bob Buhl	953	-38	1953	1967	857	31	76	2	0	0	26	38	389	.089	.129	.091	.220
2	Sandy Koufax	858	-26	1955	1966	776	26	75	9	0	2	28	43	386	.097	.145	.116	.261
3	Pedro Astacio	775	-25	1992	2006	677	31	90	8	1	0	28	5	256	.133	.146	.148	.293
4	Dick Ellsworth	774	-30	1958	1971	673	32	59	2	2	0	22	46	322	.088	.151	.097	.247
5	Dean Chance	759	-46	1961	1971	662	17	44	2	0	0	16	30	420	.066	.113	.069	.183
6	Aaron Harang	747	-41	2002	2015	670	16	65	8	0	1	21	5	294	.097	.106	.113	.220
7	Ryan Dempster	688	-37	1998	2013	588	23	58	9	2	0	17	13	221	.099	.118	.121	.239
8	Terry Mulholland	687	-25	1986	2006	619	26	69	13	1	2	23	13	281	.111	.131	.145	.276
9	Johnny Cueto	655	-36	2008	2021	545	27	55	1	0	0	18	17	178	.101	.129	.103	.232
10	John Burkett	629	-34	1987	2003	540	22	50	6	0	0	18	26	226	.093	.136	.104	.240
11	Al Leiter	613	-34	1996	2005	530	15	45	7	1	0	16	35	290	.085	.142	.102	.243
12	Al Benton	579	-41	1934	1952	512	22	50	7	0	0	14	7	200	.098	.112	.111	.223
13	Mike Morgan	573	-31	1989	2002	497	13	54	3	1	0	15	13	151	.109	.132	.119	.251
14	Bill Hands	563	-33	1965	1972	472	19	37	6	0	0	19	39	249	.078	.150	.091	.241
15	Ron Kline	548	-39	1952	1970	491	14	45	2	1	0	14	15	221	.092	.122	.100	.222
16	Pedro Martínez	518	-32	1992	2009	434	22	43	6	2	0	18	15	190	.099	.134	.122	.256
17	Ben Sheets	513	-47	2001	2012	449	12	34	3	0	0	12	19	212	.076	.113	.082	.196
18	Roger Craig	509	-35	1955	1966	448	15	38	2	0	0	12	31	219	.085	.146	.089	.235

Dean Chance had the 5th worst OPS+ of the 86 and the 5th most PA.