highest wrc+ by a player in a season with at least 300 pa before 1990 with slg under.6

Before 1990, Ty Cobb had the highest wRC+ with a slugging percentage below .600 and 300+ plate appearances in a season, with 206 wRC+ in 1910.

	NAME	WRC+	PA	SLG	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	OPS	WRC	WRAA	WOBA	BRAA
1	Ty Cobb T. Cobb	206	590	.551	1910	DET	140	506	106	194	35	13	8	91	64	4	46	65		279	56	16				.383	.456	1.008	126	64.9	.481	63.4
2	Ty Cobb T. Cobb	200	669	.570	1917	DET	152	588	107	225	44	24	6	102	61	4	34	55		335	74	16				.383	.444	1.014	139	74.2	.480	69
3	Ross Barnes R. Barnes	197	342	.590	1876	CWS	66	322	126	138	21	14	1	59	20		8			190	36					.429			105	53.2	.478	50.5
4	Nap Lajoie N. Lajoie	194	677	.514	1910	CLE	159	591	94	227	51	7	4	76	60	5	18	26		304	62	21				.384	.445	.960	135	65.2	.461	64.9
5	Honus Wagner H. Wagner	194	641	.542	1908	PIT	151	568	100	201	39	19	10	109	54	5	22	53		308	68	14				.354	.415	.957	125	65.5	.459	60.7
6	Nap Lajoie N. Lajoie	194	594	.546	1904	CLE	140	553	92	208	49	15	5	102	27	8	19	29		302	69	6				.376	.413	.959	121	59.9	.451	58.7
7	Tristram Speaker T. Speaker	190	675	.567	1912	BSA	153	580	136	222	53	12	10	90	82	6	36	52	28	329	75	7				.383	.464	1.031	154	73.6	.483	74.1
8	Dick Wakefield D. Wakefield	188	332	.576	1944	DET	78	276	53	98	15	5	12	53	55	1	29	2	2	159	32	0			5	.355	.464	1.040	73	37.2	.479	33.5
9	Babe Ruth B. Ruth	188	380	.555	1918	BSA	95	317	50	95	26	11	11	61	58	2	58	6		176	48	3				.300	.411	.966	73	36	.461	35.1
10	Ty Cobb T. Cobb	188	609	.584	1912	DET	140	553	120	226	30	23	7	83	43	5	30	61	34	323	60	8				.409	.456	1.040	140	67.5	.485	65
11	Ty Cobb T. Cobb	188	651	.517	1909	DET	156	573	116	216	33	10	9	107	48	6	45	76		296	52	24				.377	.431	.947	126	63.4	.458	57.9
12	Ty Cobb T. Cobb	188	414	.513	1914	DET	98	345	69	127	22	11	2	57	57	6	22	35	17	177	35	6				.368	.466	.979	84	41.1	.465	39
13	Rogers Hornsby R. Hornsby	187	660	.559	1920	SLN	149	589	96	218	44	20	9	94	60	3	50	12	15	329	73	8				.370	.431	.990	135	59.4	.455	63.2
14	Mickey Mantle M. Mantle	187	654	.592	1958	NYY	150	519	127	158	21	1	42	97	129	2	120	18	3	307	64	2	2	13	11	.304	.443	1.035	138	64.5	.446	65.8
15	Stan Musial S. Musial	187	702	.587	1946	SLN	156	624	124	228	50	20	16	103	73	3	31	7		366	86	2			7	.365	.434	1.021	145	71.3	.468	67.3
16	Pete Browning P. Browning	187	314	.510	1882	LOU	69	288	67	109	17	3	5		26					147	25					.378			80	36.1	.425	37.7
17	Joe Jackson J. Jackson	187	653	.579	1912	CLE	154	572	121	226	44	26	3	90	54	12	19	35	20	331	73	15				.395	.458	1.036	150	71.4	.483	68.7
18	Joe Jackson J. Jackson	186	623	.551	1913	CLE	148	528	109	197	39	17	7	71	80	5	26	26		291	63	10				.373	.460	1.011	134	65.9	.475	60.8
19	Ty Cobb T. Cobb	186	501	.535	1913	DET	122	428	70	167	18	16	4	67	58	4	31	51		229	38	11				.390	.467	1.002	107	52.2	.473	48.7
20	Joe Jackson J. Jackson	184	641	.590	1911	CLE	147	571	126	233	45	19	7	83	56	8	43	41		337	71	6				.408	.468	1.058	151	75.1	.494	68.6
21	Johnny Mize J. Mize	184	445	.576	1946	NYG	101	377	70	127	18	3	22	70	62	5	26	3		217	43	1			5	.337	.437	1.013	91	44.8	.467	41.4
22	Ty Cobb T. Cobb	184	700	.487	1915	DET	156	563	144	208	31	13	3	99	118	10	43	96	38	274	47	9				.369	.486	.973	143	71	.467	64.2
23	Joe Morgan J. Morgan	184	599	.576	1976	CIN	141	472	113	151	30	5	27	111	114	1	41	60	9	272	62	0	12	8	2	.320	.444	1.020	123	60.3	.454	55.8
24	Frank Robinson F. Robinson	183	563	.576	1967	BAL	129	479	83	149	23	7	30	94	71	7	84	2	3	276	60	0	6	14	10	.311	.403	.979	108	51.6	.426	49.4
25	George Stone G. Stone	183	658	.501	1906	SLA	154	581	91	208	25	20	6	71	52	7	89	35		291	51	18				.358	.417	.918	123	58	.441	56.5