lowest whip in a season by a pitcher with at least 15 starts; maximum 0.99 whip

Jacob deGrom has the lowest WHIP with 15+ starts in a season, with a WHIP of 0.55 in 2021.

	NAME	WHIP	GS	SEASON	TM	G	W	L	W%	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Jacob deGrom J. deGrom	0.55	15	2021	NYM	15	7	2	.778	1.08	146	1	1	0	92.0	40	11	14	6	11	1	0	0	324	0	14.28	1.08	13.27	0.59	45.1	3.4	.213	1.37	27	1.23	29	3.91	30.6
2	Clayton Kershaw C. Kershaw	0.72	21	2016	LAD	21	12	4	.750	1.69	172	3	3	0	149.0	97	28	31	8	11	2	0	1	544	5	10.39	0.66	15.64	0.48	31.6	2.0	.254	1.87	42	1.79	44	5.86	37.9
3	Pedro Martinez P. Martinez	0.74	29	2000	BOS	29	18	6	.750	1.74	284	7	4	0	217.0	128	42	44	17	32	14	0	0	817	1	11.78	1.33	8.88	0.71	34.8	3.9	.236	1.82	35	2.16	47	5.31	61.5
4	Walter Johnson W. Johnson	0.78	36	1913	WSH	48	36	7	.837	1.14	243	29	11	2	346.0	232	44	56	9	38	9	10		1,271	2	6.32	0.99	6.39	0.23	19.1	3.0	.229	1.46	39	1.90	63	6.03	42.3
5	Justin Verlander J. Verlander	0.80	34	2019	HOU	34	21	6	.778	2.58	300	2	1	0	223.0	137	64	66	36	42	6	0	0	847	4	12.11	1.70	7.14	1.45	35.4	5.0	.218	2.66	57	3.26	72	5.53	31.5
6	Addie Joss A. Joss	0.81	35	1908	CLE	42	24	11	.686	1.16	130	29	9	2	325.0	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
7	Greg Maddux G. Maddux	0.81	28	1995	ATL	28	19	2	.905	1.63	181	10	3	0	209.2	147	38	39	8	23	4	0	3	785	1	7.77	0.99	7.87	0.34	23.1	2.9	.244	1.67	39	2.25	52	6.31	46.9
8	Charlie Sweeney C. Sweeney	0.82	56	1884	TOT	60	41	15	.732	1.70	337	53	6	1	492.0	360	93	182	6	42		4		1,909	21	6.16	0.77	8.02	0.11	17.7	2.2		3.33	58	2.32	81	6.59	26.9
9	Ed Walsh E. Walsh	0.82	36	1910	CWS	45	18	20	.474	1.27	258	33	7	5	369.2	242	52	87	5	61	4	7		1,359	6	6.28	1.49	4.23	0.12	19.0	4.5	.230	2.12	52	1.63	66	5.89	34.8
10	Christy Mathewson C. Mathewson	0.83	44	1908	NYG	56	37	11	.771	1.43	259	34	11	5	390.2	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
11	Christy Mathewson C. Mathewson	0.83	33	1909	NYG	37	25	6	.806	1.14	149	26	8	2	275.1	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
12	Justin Verlander J. Verlander	0.83	28	2022	HOU	28	18	4	.818	1.75	185	0	0	0	175.0	116	34	43	12	29	6	0	0	666	3	9.51	1.49	6.38	0.62	27.8	4.4	.240	2.21	46	2.48	64	5.97	27.7
13	George Bradley G. Bradley	0.84	20	1880	PRO	28	13	8	.619	1.38	54	16	4	2	196.0	158	30	66	2	6		7		757	7	2.48	0.28	9.00	0.09	7.1	0.8		3.03	60	2.21	96	7.26	0.6
14	Tarik Skubal T. Skubal	0.84	21	2025	DET	21	10	3	.769	2.09	171	1	1	0	133.2	93	31	31	9	19	4	0	0	506	1	11.51	1.28	9.00	0.61	33.8	3.8	.277	2.09	52	1.92	47	6.26	32.4
15	Mordecai Brown M. Brown	0.84	31	1908	CHC	44	29	9	.763	1.47	123	27	9	5	312.1	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
16	Grover Alexander G. Alexander	0.84	42	1915	PHN	49	31	10	.756	1.22	241	36	12	3	376.1	253	51	86	3	64	10	7		1,435	2	5.76	1.53	3.77	0.07	16.8	4.5	.224	2.06	43	1.82	63	6.05	44.1
17	Dave McNally D. McNally	0.84	35	1968	BAL	35	22	10	.688	1.95	202	18	5	0	273.0	175	59	67	24	55	10	0	1	1,038	5	6.66	1.81	3.67	0.79	19.5	5.3	.202	2.21	67	2.76	90	5.77	9.5
18	Zack Greinke Z. Greinke	0.84	32	2015	LAD	32	19	3	.864	1.66	200	1	0	0	222.2	148	41	43	14	40	5	0	1	843	7	8.08	1.62	5.00	0.57	23.7	4.7	.229	1.74	44	2.75	73	5.98	26.2
19	Henry Boyle H. Boyle	0.85	16	1884	SLU	19	15	3	.833	1.74	88	16	2	1	150.0	118	29	63	3	10		3		595	3	5.28	0.60	8.80	0.18	14.8	1.7		3.78	59	2.56	100	7.08	-1.1
20	Bob Gibson B. Gibson	0.85	34	1968	STL	34	22	9	.710	1.12	268	28	13	0	304.2	198	38	49	11	62	7	0	6	1,161	4	7.92	1.83	4.32	0.32	23.1	5.3	.230	1.45	38	1.77	63	5.85	34.8
21	Sandy Koufax S. Koufax	0.86	41	1965	LAD	43	26	8	.765	2.04	382	27	8	2	335.2	216	76	90	26	71	5	2	4	1,297	11	10.24	1.90	5.38	0.70	29.5	5.5	.234	2.41	63	1.93	61	5.79	47.9
22	Clayton Kershaw C. Kershaw	0.86	27	2014	LAD	27	21	3	.875	1.77	239	6	2	0	198.1	139	39	42	9	31	2	0	0	749	7	10.85	1.41	7.71	0.41	31.9	4.1	.278	1.91	51	1.81	50	6.31	40.5
23	Juan Marichal J. Marichal	0.86	36	1966	SFG	37	25	6	.806	2.23	222	25	4	0	307.1	228	76	88	32	36	5	1	3	1,180	3	6.50	1.05	6.17	0.94	18.8	3.1	.221	2.58	62	2.86	82	6.68	21.3
24	Ed Walsh E. Walsh	0.86	49	1908	CWS	66	40	15	.727	1.42	269	42	11	6	464.0	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
25	Chris Sale C. Sale	0.86	27	2018	BOS	27	12	4	.750	2.11	237	0	0	0	158.0	102	37	39	11	34	14	0	0	617	4	13.50	1.94	6.97	0.63	38.4	5.5	.283	2.22	48	1.97	47	5.81	39.2