Tom Seaver had the lowest WHIP in 1973, with a WHIP of 0.98.

Interpreted as:

whip with a minimum of 1 IP per team game leaders 1973

	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	Tom Seaver T. Seaver	0.98	1973	NYM	36	19	10	.655	36	2.08	251	18	3	0	290.0	219	67	74	23	64	4	0	5	1,147	5	7.79	1.99	3.92	0.71	21.9	5.6	.243	2.30	59	2.56	72	6.80	32.9
2	Don Sutton D. Sutton	0.98	1973	LAD	33	18	10	.643	33	2.42	200	14	3	0	256.1	196	69	78	18	56	5	0	4	1,006	10	7.02	1.97	3.57	0.63	19.9	5.6	.245	2.74	70	2.62	75	6.88	25.3
3	Luis Tiant L. Tiant	1.08	1973	BOS	35	20	13	.606	35	3.34	206	23	0	0	272.0	217	101	105	32	78	7	0	3	1,096	2	6.82	2.58	2.64	1.06	18.8	7.1	.239	3.47	83	3.51	87	7.18	15.6
4	Andy Messersmith A. Messersmith	1.09	1973	LAD	33	14	10	.583	33	2.70	177	10	3	0	249.2	196	75	90	24	77	6	0	3	1,015	6	6.38	2.78	2.30	0.87	17.4	7.6	.235	3.24	78	3.39	97	7.07	2.4
5	Bob Gibson B. Gibson	1.11	1973	STL	25	12	10	.545	25	2.77	142	13	1	0	195.0	159	60	71	12	57	3	0	6	790	6	6.55	2.63	2.49	0.55	18.0	7.2	.255	3.28	76	2.82	77	7.34	18.5
6	Bert Blyleven B. Blyleven	1.12	1973	MIN	40	20	17	.541	40	2.52	258	25	9	0	325.0	296	91	109	16	67	9	0	4	1,321	7	7.14	1.86	3.85	0.44	19.5	5.1	.288	3.02	63	2.31	58	8.20	57.6
7	Catfish Hunter C. Hunter	1.14	1973	OAK	36	21	5	.808	36	3.34	124	11	3	0	256.1	222	95	105	39	69	1	0	1	1,040	2	4.35	2.42	1.80	1.37	11.9	6.6	.227	3.69	93	4.39	123	7.79	-25.6
8	Jim Palmer J. Palmer	1.14	1973	BAL	38	22	9	.710	37	2.40	158	19	6	1	296.1	225	79	86	16	113	3	1	5	1,190	7	4.80	3.43	1.40	0.49	13.3	9.5	.232	2.61	65	3.37	91	6.83	10.3
9	Jim Rooker J. Rooker	1.14	1973	PIT	41	10	6	.625	18	2.85	122	6	3	5	170.1	143	54	59	12	52	2	9	10	694	4	6.45	2.75	2.35	0.63	17.6	7.5	.259	3.12	80	2.99	84	7.56	10.9
10	Ken Holtzman K. Holtzman	1.15	1973	OAK	40	21	13	.618	40	2.97	157	16	4	0	297.1	275	98	109	22	66	4	0	5	1,210	12	4.75	2.00	2.38	0.67	13.0	5.5	.263	3.30	83	3.17	89	8.32	13.1
11	Nelson Briles N. Briles	1.15	1973	PIT	33	14	13	.519	33	2.84	94	7	1	0	218.2	201	69	87	19	51	1	0	3	893	1	3.87	2.10	1.84	0.78	10.5	5.7	.250	3.58	80	3.54	99	8.27	0.3
12	Al Downing A. Downing	1.16	1973	LAD	30	9	9	.500	28	3.31	124	5	2	0	193.0	155	71	87	19	68	1	1	3	790	7	5.78	3.17	1.82	0.89	15.7	8.6	.235	4.06	95	3.63	104	7.23	-3.5
13	Tommy John T. John	1.16	1973	LAD	36	16	7	.696	31	3.10	116	4	2	0	218.0	202	75	88	16	50	4	3	2	888	3	4.79	2.06	2.32	0.66	13.1	5.6	.265	3.63	89	3.19	91	8.34	7.1
14	Don Wilson D. Wilson	1.17	1973	HOU	37	11	16	.407	32	3.20	149	10	3	2	239.1	187	85	94	21	92	7	4	6	988	7	5.60	3.46	1.62	0.79	15.1	9.3	.231	3.53	90	3.69	104	7.03	-3.9
15	Don Gullett D. Gullett	1.17	1973	CIN	45	18	8	.692	30	3.51	153	7	4	2	228.1	198	89	95	24	69	3	12	8	942	3	6.03	2.72	2.22	0.95	16.2	7.3	.251	3.74	100	3.53	100	7.80	-0.5
16	Jerry Koosman J. Koosman	1.18	1973	NYM	35	14	15	.483	35	2.84	156	12	3	0	263.0	234	83	93	18	76	4	0	6	1,071	3	5.34	2.60	2.05	0.62	14.6	7.1	.264	3.18	80	3.17	89	8.01	11.4
17	Fergie Jenkins F. Jenkins	1.20	1973	CHC	38	14	16	.467	38	3.89	170	7	2	0	271.0	267	117	133	35	57	4	0	10	1,119	1	5.65	1.89	2.98	1.16	15.2	5.1	.272	4.42	99	3.66	93	8.87	8.8
18	Jack Billingham J. Billingham	1.20	1973	CIN	40	19	10	.655	40	3.04	155	16	7	0	293.1	257	99	112	20	95	10	0	10	1,205	10	4.76	2.91	1.63	0.61	12.9	7.9	.256	3.44	86	3.46	98	7.89	1.7
19	Dock Ellis D. Ellis	1.20	1973	PIT	28	12	14	.462	28	3.05	122	3	1	0	192.0	176	65	86	7	55	6	0	7	803	3	5.72	2.58	2.22	0.33	15.2	6.8	.276	4.03	86	2.71	76	8.25	18.4
20	Vida Blue V. Blue	1.21	1973	OAK	37	20	9	.690	37	3.28	158	13	4	0	263.2	214	96	108	26	105	4	0	2	1,083	15	5.39	3.58	1.50	0.89	14.6	9.7	.238	3.69	91	3.88	109	7.30	-10.6
21	Wayne Twitchell W. Twitchell	1.21	1973	PHI	34	13	9	.591	28	2.50	169	10	5	0	223.1	172	62	71	16	99	10	0	9	921	13	6.81	3.99	1.71	0.64	18.3	10.7	.249	2.86	66	3.44	91	6.93	8.7
22	Reggie Cleveland R. Cleveland	1.21	1973	STL	32	14	10	.583	32	3.01	122	6	3	0	224.0	211	75	88	13	61	4	0	12	939	3	4.90	2.45	2.00	0.52	13.0	6.5	.268	3.54	82	3.09	84	8.48	14.5
23	Claude Osteen C. Osteen	1.22	1973	LAD	33	16	11	.593	33	3.31	86	12	3	0	236.2	227	87	97	20	61	2	0	2	961	7	3.27	2.32	1.41	0.76	8.9	6.3	.261	3.69	95	3.73	107	8.63	-7.2
24	Bill Greif B. Greif	1.22	1973	SDP	36	10	17	.370	31	3.21	120	9	3	1	199.1	181	71	88	20	62	5	2	12	823	5	5.42	2.80	1.94	0.90	14.6	7.5	.261	3.97	91	3.67	104	8.17	-3.6
25	Jim Colborn J. Colborn	1.22	1973	MIL	43	20	12	.625	36	3.18	135	22	4	1	314.1	297	111	133	21	87	3	2	5	1,287	6	3.87	2.49	1.55	0.60	10.5	6.8	.265	3.81	83	3.43	90	8.50	13