Jack Rowe has the best strikeout percentage with 300+ plate appearances in a season, with a strikeout percentage of 0.0 in 1882.

Interpreted as:

lowest k% by a player in a season min 300 pa

	NAME	SO%	PA	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	TB	XBH	SH	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Jack Rowe J. Rowe	0.0	320	1882	BUF	75	308	43	82	14	5	1	42	12		0			109	20			.266		.354		50	4.5	.294	103	1.5
2	George Bradley G. Bradley	0.3	336	1883	TOT	80	328	47	78	8	6	1	37	8		1			101	15			.238		.308		42	-8.4	.255	81	-9.5
3	Willie Keeler W. Keeler	0.3	633	1899	BKN	141	570	140	216	12	13	1	61	37	9	2	45		257	26	17		.379	.425	.451	.876	126	39.1	.420	136	33.5
4	Lave Cross L. Cross	0.5	592	1899	TOT	141	557	76	166	19	5	5	84	25	2	3	13		210	29	8		.298	.330	.377	.707	79	-2.6	.338	92	-7
5	Joe Sewell J. Sewell	0.5	576	1932	NYY	125	503	95	137	21	3	11	68	56	3	3	0	2	197	35	14		.272	.349	.392	.740	75	2.3	.342	98	-1.4
6	Emil Verban E. Verban	0.6	363	1949	CHC	98	343	38	99	11	1	0	22	8	2	2	3		112	12	10	5	.289	.309	.327	.635	30	-12.6	.299	69	-14.2
7	Joe Sewell J. Sewell	0.6	699	1925	CLE	155	608	78	204	37	7	1	98	64	4	4	7	6	258	45	23		.336	.402	.424	.827	111	19.1	.387	112	11.8
8	Joe Sewell J. Sewell	0.6	672	1929	CLE	152	578	90	182	38	3	7	73	48	5	4	6	6	247	48	41		.315	.372	.427	.800	97	8.5	.368	103	3.2
9	John Peters J. Peters	0.6	319	1876	CWS	66	316	70	111	14	2	1	47	3		2			132	17			.351		.418		68	20	.358	136	17.4
10	Jack Doyle J. Doyle	0.6	471	1894	NYG	107	427	94	157	30	8	3	103	37	3	3	44		212	41	4		.368	.422	.496	.918	106	21.3	.424	122	19.2
11	Willie Keeler W. Keeler	0.6	619	1900	BKN	136	563	106	204	13	12	4	68	30	7	4	41		253	29	19		.362	.402	.449	.851	116	31.9	.404	130	26.4
12	John Clapp J. Clapp	0.7	306	1876	STL	64	298	60	91	4	2	0	29	8		2			99	6			.305		.332		53	7.2	.308	122	10.3
13	Joe Sewell J. Sewell	0.7	606	1933	NYY	135	524	87	143	18	1	2	54	71	1	4	2	2	169	21	10		.273	.361	.323	.683	70	-0.2	.330	92	-6.4
14	Willie Keeler W. Keeler	0.7	604	1898	BAL	129	561	126	216	7	2	1	44	31	3	4	28		230	10	9		.385	.420	.410	.830	112	33	.406	135	29
15	John Grim J. Grim	0.7	302	1897	BKN	80	290	26	72	10	1	0	25	1	3	2	3		84	11	8		.248	.259	.290	.548	21	-24.3	.260	50	-23.7
16	Lave Cross L. Cross	0.7	595	1902	PHA	137	559	90	191	39	8	0	108	27	2	4	25		246	47	7		.342	.374	.440	.814	98	27.9	.386	118	14.6
17	Charlie Hollocher C. Hollocher	0.7	692	1922	CHC	152	592	90	201	37	8	3	69	58	5	5	19	29	263	48	37		.340	.403	.444	.847	112	25.6	.394	119	18.1
18	Joe Sewell J. Sewell	0.7	414	1930	CLE	109	353	44	102	17	6	0	48	41	7	3	1	4	131	23	13		.289	.374	.371	.745	56	-2.6	.349	89	-6.2
19	Willie Keeler W. Keeler	0.7	672	1906	NYH	152	592	96	180	8	3	2	33	40	5	5	23		200	13	35		.304	.353	.338	.691	81	14.7	.340	108	5.9
20	Ed Daily E. Daily	0.8	527	1890	TOT	118	489	93	116	16	9	1	49	37	1	4	62		153	26			.237	.292	.313	.605	63	-18.1	.295	78	-17.5
21	Willie Keeler W. Keeler	0.8	645	1901	BKN	136	595	123	202	18	12	2	43	21	7	5	23		250	32	22		.339	.369	.420	.789	106	22.3	.371	123	19.5
22	John Ward J. Ward	0.8	636	1893	NYG	135	588	129	193	27	9	2	77	47	1	5	46		244	38			.328	.379	.415	.794	117	13.7	.381	111	12.3
23	Willie Keeler W. Keeler	0.8	618	1897	BAL	129	564	145	239	27	19	0	74	35	7	5	64		304	46	12		.424	.464	.539	1.003	155	61.5	.470	159	57.2
24	Rasty Wright R. Wright	0.8	480	1890	TOT	101	393	89	111	11	6	0	29	81	6	4	33		134	17			.282	.413	.341	.753	92	18.7	.384	131	22.6
25	Stuffy McInnis S. McInnis	0.9	580	1922	CLE	142	537	58	164	28	7	1	78	15	1	5	1	5	209	36	27		.305	.325	.389	.715	64	-9	.329	83	-13.3