lowest single season whip amongst pitchers with at least 15 inning pitched in 1900s

Between the 1900 and 1909 seasons, Harry Coveleski had the lowest WHIP with 15.0+ innings pitched in a season, with a WHIP of 0.65 in his rookie season in 1907.

	NAME	WHIP	IP	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Harry Coveleski H. Coveleski	0.65	20.0	1907	PHN	4	1	0	1.000	0	0.00	6	0	0	0	10	0	2	0	3	1	4	72	0	2.70	1.35	2.00	0.00	8.3	4.2	.161	0.90	0	2.18	83	4.50	1
2	Glenn Liebhardt G. Liebhardt	0.78	18.0	1906	CLE	2	2	0	1.000	2	1.50	9	2	0	0	13	3	4	0	1	0	0	64	0	4.50	0.50	9.00	0.00	14.1	1.6	.241	2.00	56	1.53	60	6.50	2
3	George McQuillan G. McQuillan	0.78	41.0	1907	PHN	6	4	0	1.000	5	0.66	28	5	3	0	21	3	3	0	11	1	1	145	1	6.15	2.41	2.55	0.00	19.3	7.6	.200	0.66	27	1.69	64	4.61	4.3
4	Tom Hughes T. Hughes	0.80	15.0	1906	NYH	3	1	0	1.000	1	4.20	5	1	0	0	11	7	8	2	1	0	1	54	1	3.00	0.60	5.00	1.20	9.3	1.9	.196	4.80	145	3.63	130	6.60	-1.2
5	Addie Joss A. Joss	0.81	325.0	1908	CLE	42	24	11	.686	35	1.16	130	29	9	2	232	42	77	2	30	2	6	1,209	6	3.60	0.83	4.33	0.06	10.8	2.5	.220	2.13	49	1.68	76	6.42	19.3
6	Len Swormstedt L. Swormstedt	0.81	21.0	1906	BSA	3	1	1	.500	2	1.29	6	2	0	0	17	3	6	0	0	1	1	77	0	2.57	0.00		0.00	7.8	0.0	.243	2.57	48	1.94	75	7.29	1.5
7	Jack Ryan J. Ryan	0.81	35.2	1908	CLE	8	1	1	.500	1	2.27	7	1	0	1	27	9	12	3	2	1	6	126	0	1.77	0.50	3.50	0.76	5.6	1.6	.212	3.03	96	3.05	138	6.81	-3.4
8	Christy Mathewson C. Mathewson	0.83	390.2	1908	NYG	56	37	11	.771	44	1.43	259	34	11	5	281	62	85	5	42	3	9	1,469	2	5.97	0.97	6.17	0.12	17.6	2.9	.238	1.96	61	1.29	52	6.47	52.4
9	Christy Mathewson C. Mathewson	0.83	275.1	1909	NYG	37	25	6	.806	33	1.14	149	26	8	2	192	35	57	2	36	0	4	998	4	4.87	1.18	4.14	0.07	14.9	3.6	.234	1.86	44	1.62	61	6.28	31.7
10	Elmer Steele E. Steele	0.83	118.0	1908	BOS	16	5	7	.417	13	1.83	37	9	1	0	85	24	34	1	13	3	2	423	0	2.82	0.99	2.85	0.08	8.7	3.1	.228	2.59	75	1.99	87	6.48	4
11	Nick Maddox N. Maddox	0.83	54.0	1907	PIT	6	5	1	.833	6	0.83	38	6	1	0	32	5	8	0	13	4	0	197	1	6.33	2.17	2.92	0.00	19.3	6.6	.225	1.33	34	1.72	65	5.33	5.5
12	Mordecai Brown M. Brown	0.84	312.1	1908	CHC	44	29	9	.763	31	1.47	123	27	9	5	214	51	64	1	49	5	12	1,153	6	3.54	1.41	2.51	0.03	10.7	4.2	.218	1.84	63	1.87	75	6.17	21.5
13	Babe Adams B. Adams	0.85	130.0	1909	PIT	25	12	3	.800	12	1.11	65	7	3	2	88	16	25	0	23	3	11	475	1	4.50	1.59	2.83	0.00	13.7	4.8	.229	1.73	43	1.82	69	6.09	11.7
14	Ed Walsh E. Walsh	0.86	464.0	1908	CWS	66	40	15	.727	49	1.42	269	42	11	6	343	73	111	2	56	9	16	1,755	10	5.22	1.09	4.80	0.04	15.3	3.2	.240	2.15	63	1.42	67	6.65	34.2
15	Cy Young C. Young	0.87	320.2	1905	BSA	38	18	19	.486	33	1.82	210	31	4	0	248	65	99	3	30	8	5	1,189	6	5.89	0.84	7.00	0.08	17.7	2.5	.261	2.78	68	1.69	61	6.96	38.4
16	Mordecai Brown M. Brown	0.87	342.2	1909	CHC	50	27	9	.750	34	1.31	172	32	8	7	246	50	78	1	53	7	15	1,280	9	4.52	1.39	3.25	0.03	13.4	4.1	.234	2.05	51	1.78	68	6.46	32.4
17	Roy Castleton R. Castleton	0.88	16.0	1907	NYH	3	1	1	.500	2	2.81	3	1	0	0	11	5	6	1	3	0	1	59	0	1.69	1.69	1.00	0.56	5.1	5.1	.192	3.38	104	3.18	126	6.19	-1
18	Cy Young C. Young	0.89	299.0	1908	BOS	36	21	11	.656	33	1.26	150	30	3	2	230	42	68	1	37	1	3	1,116	4	4.52	1.11	4.05	0.03	13.4	3.3	.247	2.05	52	1.52	67	6.92	25.4
19	Doc White D. White	0.90	219.1	1906	CWS	28	18	6	.750	24	1.52	95	20	7	0	160	37	47	2	38	5	4	816	5	3.90	1.56	2.50	0.08	11.6	4.7	.234	1.93	59	2.21	90	6.57	4.9
20	John Eubank J. Eubank	0.92	17.1	1905	DET	3	1	0	1.000	2	2.08	1	0	0	0	13	4	12	0	3	1	1	66	0	0.52	1.56	0.33	0.00	1.5	4.5	.213	6.23	78	3.10	114	6.75	-0.7
21	Len Swormstedt L. Swormstedt	0.92	26.0	1901	CIN	3	2	1	.667	3	1.73	13	3	0	0	19	5	8	2	5	2	0	101	0	4.50	1.73	2.60	0.69	12.9	5.0	.215	2.77	52	3.73	112	6.58	-1.1
22	Addie Joss A. Joss	0.93	282.0	1906	CLE	34	21	9	.700	31	1.72	106	28	9	1	220	54	81	3	43	3	2	1,055	2	3.38	1.37	2.47	0.10	10.0	4.1	.241	2.59	65	2.24	88	7.02	9.5
23	Bill Burns B. Burns	0.93	164.0	1908	WSH	23	6	11	.353	19	1.70	55	11	2	0	135	31	58	3	18	4	1	612	1	3.02	0.99	3.06	0.16	9.0	2.9	.248	3.18	74	2.07	96	7.41	0.7
24	Christy Mathewson C. Mathewson	0.93	338.2	1905	NYG	43	31	9	.775	37	1.28	206	32	8	3	252	48	85	4	64	1	6	1,294	6	5.47	1.70	3.22	0.11	15.9	4.9	.243	2.26	42	2.03	69	6.70	34.9
25	Mordecai Brown M. Brown	0.93	277.1	1906	CHC	36	26	6	.813	32	1.04	144	27	9	3	198	32	56	1	61	4	4	1,044	2	4.67	1.98	2.36	0.03	13.8	5.8	.236	1.82	39	2.08	75	6.43	21.1