single season home run leaders as a pirate from 1979 to 2020

Between the 1979 and 2020 seasons, Brian Giles crushed the most homers for the Pirates in a season, with 39 homers in 1999.

	NAME	HR	SEASON	TM	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Brian Giles B. Giles	39	1999	PIT	141	521	109	164	33	3	115	95	3	80	6	2	627	320	75	0	8	7	14	.315	.418	.614	1.032	132	50.1	.433	154	45.9
2	Brian Giles B. Giles	38	2002	PIT	153	497	95	148	37	5	103	135	7	74	15	6	644	309	80	0	5	24	10	.298	.450	.622	1.072	140	62.7	.444	174	59.5
3	Josh Bell J. Bell	37	2019	PIT	143	527	94	146	37	3	116	74	5	118	0	1	613	300	77	0	7	13	11	.277	.367	.569	.936	108	31	.378	135	28
4	Brian Giles B. Giles	37	2001	PIT	160	576	116	178	37	7	95	90	4	67	13	6	674	340	81	0	4	14	10	.309	.404	.590	.994	133	49	.413	151	44.6
5	Pedro Alvarez P. Alvarez	36	2013	PIT	152	558	70	130	22	2	100	48	4	186	2	0	614	264	60	0	4	7	16	.233	.296	.473	.770	75	7.7	.330	112	8.6
6	Jason Bay J. Bay	35	2006	PIT	159	570	101	163	29	3	109	102	8	156	11	2	689	303	67	0	9	9	15	.286	.396	.532	.928	122	35.8	.392	138	33.9
7	Brian Giles B. Giles	35	2000	PIT	156	559	111	176	37	7	123	114	7	69	6	0	688	332	79	0	8	13	15	.315	.432	.594	1.026	144	53.8	.430	153	49.6
8	Aramis Ramirez A. Ramirez	34	2001	PIT	158	603	83	181	40	0	112	40	8	100	5	4	655	323	74	0	4	4	9	.300	.350	.536	.885	107	25.7	.374	125	21.4
9	Barry Bonds B. Bonds	34	1992	PIT	140	473	109	147	36	5	103	127	5	69	39	8	612	295	75	0	7	32	9	.311	.456	.624	1.080	131	65.4	.459	197	65.2
10	Barry Bonds B. Bonds	33	1990	PIT	151	519	104	156	32	3	114	93	3	83	52	13	621	293	68	0	6	15	8	.301	.406	.565	.970	118	48.3	.420	166	47.4
11	Jason Bay J. Bay	32	2005	PIT	162	599	110	183	44	6	101	95	6	142	21	1	707	335	82	0	7	9	12	.306	.402	.559	.961	132	47.3	.407	150	44.1
12	Bobby Bonilla B. Bonilla	32	1990	PIT	160	625	112	175	39	7	120	45	1	103	4	3	686	324	78	0	15	9	11	.280	.322	.518	.841	99	22.7	.362	127	21.8
13	Willie Stargell W. Stargell	32	1979	PIT	126	424	60	119	19	0	82	47	3	105	0	1	480	234	51	0	6	12	10	.281	.352	.552	.904	79	23.1	.385	138	21.4
14	Andrew McCutchen A. McCutchen	31	2012	PIT	157	593	107	194	29	6	96	70	5	132	20	12	673	328	66	0	5	13	9	.327	.400	.553	.953	124	47.5	.403	158	46.4
15	Reggie Sanders R. Sanders	31	2003	PIT	130	453	74	129	27	4	87	38	5	110	15	5	498	257	62	0	2	4	10	.285	.345	.567	.913	84	23.2	.383	132	20.3
16	Jason Thompson J. Thompson	31	1982	PIT	156	550	87	156	32	0	101	101	2	107	1	0	662	281	63	0	9	7	11	.284	.391	.511	.902	114	39.7	.396	152	39
17	Pedro Alvarez P. Alvarez	30	2012	PIT	149	525	64	128	25	1	85	57	1	180	1	0	586	245	56	0	3	6	10	.244	.317	.467	.784	76	9.4	.335	112	8.5
18	Jeff King J. King	30	1996	PIT	155	591	91	160	36	4	111	70	2	95	15	1	672	294	70	1	8	3	17	.271	.346	.497	.843	101	14.8	.361	117	14.7
19	Craig Wilson C. Wilson	29	2004	PIT	155	561	97	148	35	5	82	50	30	169	2	2	644	280	69	0	3	3	11	.264	.354	.499	.853	99	19.5	.366	120	16.3
20	Andrew McCutchen A. McCutchen	28	2017	PIT	156	570	94	159	30	2	88	73	4	116	11	5	650	277	60	0	3	5	10	.279	.363	.486	.849	101	21.5	.360	123	18.8
21	Pedro Alvarez P. Alvarez	27	2015	PIT	150	437	60	106	18	0	77	48	2	131	2	0	491	205	45	0	4	9	6	.243	.318	.469	.787	63	7.6	.333	112	6.7
22	Garrett Jones G. Jones	27	2012	PIT	145	475	68	130	28	3	86	33	0	103	2	0	515	245	58	0	7	2	3	.274	.317	.516	.832	74	15.3	.352	124	14.5
23	Kevin Young K. Young	27	1998	PIT	159	592	88	160	40	2	108	44	11	127	15	7	656	285	69	0	9	1	20	.270	.328	.481	.809	91	9.3	.348	108	6.7
24	Josh Bell J. Bell	26	2017	PIT	159	549	75	140	26	6	90	66	1	117	2	4	620	256	58	0	4	4	15	.255	.334	.466	.800	85	9.1	.338	108	6.5
25	Nate McLouth N. McLouth	26	2008	PIT	152	597	113	165	46	4	94	65	12	93	23	3	685	297	76	5	6	11	5	.276	.356	.497	.853	103	20.4	.364	121	17.7