Between the 1996 and 1999 seasons, Pedro Martinez had the lowest WHIP in a season, with a WHIP of 0.92 in 1999.

Interpreted as:

lowest single season whip with a minimum of 1 IP per team game by a player 1996 to 1999

	NAME	WHIP	SEASON	TM	G	W	L	W%	GS	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	Pedro Martinez P. Martinez	0.92	1999	BOS	31	23	4	.852	29	2.07	313	5	1	0	213.1	160	49	56	9	37	9	1	1	835	6	13.20	1.56	8.46	0.38	37.5	4.4	.323	2.36	42	1.38	30	6.75	79.4
2	Pedro Martinez P. Martinez	0.93	1997	MON	31	17	8	.680	31	1.90	305	13	4	0	241.1	158	51	65	16	67	9	0	5	947	3	11.37	2.50	4.55	0.60	32.2	7.1	.258	2.42	45	2.38	57	5.89	49
3	Kevin Brown K. Brown	0.94	1996	FLA	32	17	11	.607	32	1.89	159	5	3	0	233.0	187	49	60	8	33	16	0	2	906	6	6.14	1.27	4.82	0.31	17.5	3.6	.259	2.32	46	2.88	68	7.22	35.8
4	Greg Maddux G. Maddux	0.95	1997	ATL	33	19	4	.826	33	2.20	177	5	2	0	232.2	200	57	58	9	20	6	0	6	893	0	6.85	0.77	8.85	0.35	19.8	2.2	.280	2.24	53	2.42	58	7.74	46.2
5	Greg Maddux G. Maddux	0.98	1998	ATL	34	18	9	.667	34	2.22	204	9	5	0	251.0	201	62	75	13	45	7	0	10	987	4	7.31	1.61	4.53	0.47	20.7	4.6	.262	2.69	53	2.80	66	7.21	41
6	Kevin Millwood K. Millwood	1.00	1999	ATL	33	18	7	.720	33	2.68	205	2	0	0	228.0	168	68	80	24	59	4	0	2	906	5	8.09	2.33	3.47	0.95	22.6	6.5	.235	3.16	59	3.52	77	6.63	26.7
7	John Smoltz J. Smoltz	1.00	1996	ATL	35	24	8	.750	35	2.94	276	6	2	0	253.2	199	83	93	19	55	2	0	3	995	10	9.79	1.95	5.02	0.67	27.7	5.5	.280	3.30	69	2.63	60	7.06	48.4
8	Randy Johnson R. Johnson	1.02	1999	ARI	35	17	9	.654	35	2.48	364	12	2	0	271.2	207	75	86	30	70	9	0	3	1,079	4	12.06	2.32	5.20	0.99	33.7	6.5	.292	2.85	53	2.75	59	6.86	57.2
9	Roger Clemens R. Clemens	1.03	1997	TOR	34	21	7	.750	34	2.05	292	9	3	0	264.0	204	60	65	9	68	12	0	1	1,044	4	9.95	2.32	4.29	0.31	28.0	6.5	.294	2.22	45	2.24	50	6.95	66.3
10	Greg Maddux G. Maddux	1.03	1996	ATL	35	15	11	.577	35	2.72	172	5	1	0	245.0	225	74	85	11	28	3	0	11	978	4	6.32	1.03	6.14	0.40	17.6	2.9	.280	3.12	64	2.72	62	8.27	44.4
11	Rick Reed R. Reed	1.04	1997	NYM	33	13	9	.591	31	2.89	113	2	0	0	208.1	186	67	76	19	31	5	0	4	824	0	4.88	1.34	3.65	0.82	13.7	3.8	.255	3.28	72	3.72	90	8.04	10
12	David Wells D. Wells	1.05	1998	NYY	30	18	4	.818	30	3.49	163	8	5	0	214.1	195	83	86	29	29	1	0	0	851	2	6.84	1.22	5.62	1.22	19.2	3.4	.264	3.61	77	3.79	84	8.19	17.5
13	Curt Schilling C. Schilling	1.05	1997	PHI	35	17	11	.607	35	2.97	319	7	2	0	254.1	208	84	96	25	58	5	0	3	1,009	5	11.29	2.05	5.50	0.88	31.6	5.7	.304	3.40	69	2.61	62	7.36	45.8
14	Randy Johnson R. Johnson	1.05	1997	SEA	30	20	4	.833	29	2.28	291	5	2	0	213.0	147	54	60	20	77	10	0	2	850	4	12.30	3.25	3.78	0.85	34.2	9.1	.281	2.54	50	2.82	62	6.21	41.3
15	Kevin Brown K. Brown	1.07	1999	LAD	35	18	9	.667	35	3.00	221	5	1	0	252.1	210	84	99	19	59	7	0	1	1,018	4	7.88	2.10	3.75	0.68	21.7	5.8	.268	3.53	71	3.13	69	7.49	40.5
16	Kevin Brown K. Brown	1.07	1998	SDP	36	18	7	.720	35	2.38	257	7	3	0	257.0	225	68	77	8	49	10	0	4	1,032	10	9.00	1.72	5.24	0.28	24.9	4.7	.306	2.70	60	2.22	53	7.88	57
17	Denny Neagle D. Neagle	1.08	1997	ATL	34	20	5	.800	34	2.97	172	4	4	0	233.1	204	77	87	18	49	6	0	5	947	3	6.63	1.89	3.51	0.69	18.2	5.2	.265	3.36	71	3.34	80	7.87	22.3
18	Curt Schilling C. Schilling	1.09	1996	PHI	26	9	10	.474	26	3.19	182	8	2	0	183.1	149	65	69	16	50	3	0	5	732	5	8.93	2.45	3.64	0.79	24.9	6.8	.277	3.39	75	3.18	74	7.31	22.7
19	Pedro Martinez P. Martinez	1.09	1998	BOS	33	19	7	.731	33	2.89	251	3	2	0	233.2	188	75	82	26	67	8	0	3	951	9	9.67	2.58	3.75	1.00	26.4	7.0	.270	3.16	61	3.39	76	7.24	28.4
20	Roger Clemens R. Clemens	1.10	1998	TOR	33	20	6	.769	33	2.65	271	5	3	0	234.2	169	69	78	11	88	7	0	0	961	6	10.39	3.38	3.08	0.42	28.2	9.2	.271	2.99	57	2.65	59	6.48	49.2
21	Curt Schilling C. Schilling	1.11	1998	PHI	35	15	14	.517	35	3.25	300	15	2	0	268.2	236	97	101	23	61	6	0	3	1,089	12	10.05	2.04	4.92	0.77	27.5	5.6	.305	3.38	76	2.76	65	7.91	45.1
22	Ismael Valdez I. Valdez	1.11	1997	LAD	30	10	11	.476	30	2.65	140	0	0	0	196.2	171	58	68	16	47	3	0	1	795	3	6.41	2.15	2.98	0.73	17.6	5.9	.263	3.11	68	3.50	84	7.83	14.4
23	Mike Mussina M. Mussina	1.11	1998	BAL	29	13	10	.565	29	3.49	175	4	2	0	206.1	189	80	85	22	41	4	0	3	835	10	7.63	1.79	4.27	0.96	21.0	4.9	.282	3.71	77	3.48	76	8.24	25
24	Rick Reed R. Reed	1.12	1998	NYM	31	16	11	.593	31	3.48	153	2	1	0	212.1	208	82	84	30	29	6	0	2	845	1	6.49	1.23	5.28	1.27	18.1	3.4	.284	3.56	86	4.02	96	8.82	3.4
25	John Smoltz J. Smoltz	1.12	1999	ATL	29	11	8	.579	29	3.19	156	1	1	0	186.1	168	66	70	14	40	4	0	2	746	2	7.53	1.93	3.90	0.68	20.9	5.4	.289	3.38	71	3.13	69	8.11	29.9