most home runs vs left handed pitcher by a lefty, single season

Cecil Fielder has launched the most homers against left-handed pitchers in a season, with 25 home runs in 1990.

	NAME	HR	SEASON	TM	G	AB	H	2B	3B	RBI	BB	HBP	SO	PA	TB	XBH	SH	SF	IBB	AVG	OBP	SLG	OPS
1	Cecil Fielder C. Fielder	25	1990	DET	89	178	66	11	0	54	37	0	47	215	152	36	0	0	6	.371	.479	.854	1.333
2	Kyle Schwarber K. Schwarber	23	2025	PHI	130	234	59	8	2	46	36	6	77	276	140	33	0	0	0	.252	.366	.598	.964
3	Cal Raleigh C. Raleigh	22	2025	SEA	88	185	52	8	0	39	18	2	61	205	126	30	0	0	1	.281	.351	.681	1.032
4	Matt Olson M. Olson	22	2021	OAK	112	222	60	9	0	50	26	4	46	254	135	31	0	2	2	.270	.354	.608	.962
5	Barry Bonds B. Bonds	21	2002	SFG	83	125	48	9	1	45	45	6	16	178	122	31	0	2	6	.384	.556	.976	1.532
6	Ken Griffey Jr. K. Griffey Jr.	21	1998	SEA	97	177	53	6	1	47	16	2	33	197	124	28	0	2	0	.299	.360	.701	1.061
7	Ken Griffey Jr. K. Griffey Jr.	21	1996	SEA	94	158	47	5	1	53	20	4	33	186	117	27	0	4	0	.297	.382	.741	1.122
8	Juan Gonzalez J. Gonzalez	20	1996	TEX	69	141	53	12	0	47	15	0	20	156	125	32	0	0	6	.376	.436	.887	1.322
9	Darryl Strawberry D. Strawberry	20	1988	NYM	105	216	54	7	0	52	24	0	54	245	121	27	0	5	5	.250	.318	.560	.879
10	George Foster G. Foster	20	1977	CIN	104	229	73	12	2	61	27	3	40	262	149	34	0	3	5	.319	.393	.651	1.044
11	J.D. Martinez	19	2019	BOS	77	141	57	9	1	40	25	2	31	170	125	29	0	2	5	.404	.494	.887	1.381
12	Nelson Cruz N. Cruz	19	2016	SEA	94	191	56	8	1	35	24	2	50	218	123	28	0	1	4	.293	.376	.644	1.020
13	Kevin Mitchell K. Mitchell	19	1989	SFG	88	171	52	11	2	40	36	1	26	209	124	32	0	1	19	.304	.426	.725	1.151
14	Dave Winfield D. Winfield	19	1982	NYY	88	208	57	4	1	38	27	0	27	240	120	24	1	4	6	.274	.351	.577	.928
15	Reggie Jackson R. Jackson	19	1980	NYY	102	227	66	7	1	54	25	1	69	254	132	27	0	1	0	.291	.362	.581	.944
16	Ketel Marte K. Marte	18	2024	ARI	89	193	66	11	0	45	16	3	32	212	131	29	0	0	6	.342	.401	.679	1.080
17	Salvador Perez S. Perez	18	2021	KCR	91	172	52	4	0	36	8	3	40	184	110	22	0	1	1	.302	.342	.640	.982
18	Shohei Ohtani S. Ohtani	18	2021	LAA	104	198	52	10	5	34	23	2	69	224	126	33	0	1	5	.263	.344	.636	.980
19	Cody Bellinger C. Bellinger	18	2019	LAD	112	193	54	7	0	44	34	0	38	228	115	25	0	1	5	.280	.386	.596	.982
20	Albert Pujols A. Pujols	18	2010	STL	72	170	52	11	0	38	24	0	17	196	117	29	0	2	4	.306	.388	.688	1.076
21	David Ortiz D. Ortiz	18	2006	BOS	107	205	57	13	1	44	30	3	48	241	126	32	0	3	2	.278	.373	.615	.988
22	Sammy Sosa S. Sosa	18	1999	CHC	81	163	51	9	1	37	23	0	46	187	116	28	0	1	4	.313	.396	.712	1.107
23	Manny Ramirez M. Ramirez	18	1998	CLE	69	150	51	8	1	53	17	2	26	174	115	27	0	5	4	.340	.402	.767	1.169
24	Jeff Bagwell J. Bagwell	18	1994	HOU	50	105	48	11	1	43	20	0	9	125	115	30	0	0	2	.457	.544	1.095	1.639
25	Don Mattingly D. Mattingly	18	1985	NYY	109	264	76	20	0	66	18	1	16	292	150	38	2	7	1	.288	.328	.568	.896