single season second baseman with over .525 slugging. minimum 375 at bats.

Fred Dunlap had a slugging percentage of .621 in 1884.

	NAME	SLG	AB	SEASON	TM	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	OPS	wRC	WRAA	wOBA	wRC+	BRAA
1	Fred Dunlap F. Dunlap	.621	449	1884	SLU	101	160	185	39	8	13		29					478	279	60					.412			143	73.6	.477	215	77.7
2	Nap Lajoie N. Lajoie	.643	544	1901	PHA	131	145	232	48	14	14	125	24	13	9	27		582	350	76	1				.426	.463	1.106	157	81	.506	186	71.5
3	Nap Lajoie N. Lajoie	.546	553	1904	CLE	140	92	208	49	15	5	102	27	8	19	29		594	302	69	6				.376	.413	.959	121	59.9	.451	194	58.7
4	Larry Doyle L. Doyle	.527	526	1911	NYG	143	102	163	25	25	13	77	71	5	39	38		622	277	63	20				.310	.397	.924	118	43.8	.431	152	40.6
5	Rogers Hornsby R. Hornsby	.559	589	1920	SLN	149	96	218	44	20	9	94	60	3	50	12	15	660	329	73	8				.370	.431	.990	135	59.4	.455	187	63.2
6	Rogers Hornsby R. Hornsby	.639	592	1921	SLN	154	131	235	44	18	21	126	60	7	48	13	13	674	378	83	15				.397	.458	1.097	162	77.5	.489	191	77.7
7	Rogers Hornsby R. Hornsby	.722	623	1922	SLN	154	141	250	46	14	42	152	65	1	50	17	12	704	450	102	15				.401	.459	1.181	186	97.8	.520	197	92.7
8	Rogers Hornsby R. Hornsby	.627	424	1923	SLN	107	89	163	32	10	17	83	55	3	29	3	7	487	266	59	5				.384	.459	1.086	116	55.4	.490	184	53.3
9	Rogers Hornsby R. Hornsby	.696	536	1924	SLN	143	121	227	43	14	25	94	89	2	32	5	12	640	373	82	13				.424	.507	1.203	175	96.7	.537	221	95.9
10	Rogers Hornsby R. Hornsby	.756	504	1925	SLN	138	133	203	41	10	39	143	83	2	39	5	3	605	381	90	16				.403	.489	1.245	173	94.1	.540	208	90.1
11	Rogers Hornsby R. Hornsby	.586	568	1927	NYG	155	133	205	32	9	26	125	86	4	38	9		684	333	67	26				.361	.448	1.035	151	67.4	.469	176	65.8
12	Rogers Hornsby R. Hornsby	.632	486	1928	BSN	140	99	188	42	7	21	94	107	1	41	5		619	307	70	25				.387	.498	1.130	156	80.2	.506	196	78.1
13	Tony Lazzeri T. Lazzeri	.535	404	1928	NYY	116	62	134	30	11	10	82	43	1	50	15	5	463	216	51	15				.332	.397	.932	85	28.3	.421	146	27.5
14	Charlie Gehringer C. Gehringer	.532	634	1929	DET	155	131	215	45	19	13	106	64	6	19	27	10	715	337	77	11				.339	.405	.936	135	40.2	.419	136	34.6
15	Rogers Hornsby R. Hornsby	.679	602	1929	CHC	156	156	229	47	8	39	149	87	1	65	2		712	409	94	22				.380	.459	1.139	181	86.8	.497	174	77.3
16	Tony Lazzeri T. Lazzeri	.561	545	1929	NYY	147	101	193	37	11	18	106	68	4	45	9	10	635	306	66	18				.354	.429	.991	132	48.5	.443	158	50.2
17	Charlie Gehringer C. Gehringer	.534	610	1930	DET	154	144	201	47	15	16	98	69	7	17	19	15	699	326	78	13				.330	.404	.938	135	36.3	.414	133	33.1
18	George Grantham G. Grantham	.534	552	1930	PIT	146	120	179	34	14	18	99	81	2	66	5		652	295	66	17				.324	.413	.947	128	36.5	.419	125	25.4
19	Charlie Gehringer C. Gehringer	.555	641	1936	DET	154	144	227	60	12	15	116	83	4	13	4	1	731	356	87	3				.354	.431	.987	154	58.5	.445	139	43.7
20	Charlie Gehringer C. Gehringer	.544	406	1939	DET	118	86	132	29	6	16	86	68	1	16	4	3	486	221	51	11			7	.325	.423	.967	97	36.7	.437	138	25.6
21	Bobby Doerr B. Doerr	.528	468	1944	BSA	125	95	152	30	10	15	81	58	0	31	5	2	536	247	55	10			8	.325	.399	.927	98	40.2	.429	159	36
22	Jackie Robinson J. Robinson	.528	593	1949	BKN	156	122	203	38	12	16	124	86	8	27	37		704	313	66	17			22	.342	.432	.960	138	54.1	.442	156	48.6
23	Jackie Robinson J. Robinson	.527	548	1951	BKN	153	106	185	33	7	19	88	79	9	27	25	8	642	289	59	6			10	.338	.429	.957	125	50	.436	156	44.5
24	Felix Mantilla F. Mantilla	.553	425	1964	BOS	133	69	123	20	1	30	64	41	4	46	0	1	470	235	51	0	0	1	12	.289	.357	.910	83	32.8	.399	146	25.1
25	Davey Johnson D. Johnson	.546	559	1973	ATL	157	84	151	25	0	43	99	81	9	93	5	3	651	305	68	0	2	9	8	.270	.370	.916	114	42.1	.404	146	34.7

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Phillies - w	88	74	.543	6.0
Marlins	80	82	.494	14.0
Nationals	77	85	.475	17.0
Mets	74	88	.457	20.0
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