lowest whip in mlb relievers all-time in minimum 15 games pitched

Karl Spooner had the lowest WHIP by a relief pitcher when pitching in 15+ games, with a WHIP of 0.62.

	NAME	WHIP	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	H/9
1	Karl Spooner K. Spooner	0.62	15	5	1	.833	0	1.11	30	0	0	2	32.1	12	4	4	0	8	3	10	1	117	0	8.35	2.23	3.75	0.00	25.6	6.8	.158	1.11	3.34
2	Joe Musgrove J. Musgrove	0.68	26	3	0	1.000	0	1.05	43	0	0	2	42.2	23	5	5	2	6	3	7	1	157	2	9.07	1.27	7.17	0.42	27.4	3.8	.204	1.05	4.85
3	Tyler Wells T. Wells	0.79	49	2	3	.400	0	3.49	73	0	0	5	67.0	40	26	27	9	13	1	20	0	256	2	9.81	1.75	5.62	1.21	28.5	5.1	.194	3.63	5.37
4	Koji Uehara K. Uehara	0.83	424	20	22	.476	0	2.43	524	0	0	95	414.0	279	112	120	53	66	4	207	8	1,583	9	11.39	1.43	7.94	1.15	33.1	4.2	.241	2.61	6.07
5	Andy Messersmith A. Messersmith	0.84	49	5	0	1.000	0	1.58	97	0	0	14	97.0	45	17	17	6	36	1	30	7	368	1	9.00	3.34	2.69	0.56	26.4	9.8	.171	1.58	4.18
6	Tobias Myers T. Myers	0.84	18	2	1	.667	0	1.62	27	0	0	0	33.1	25	6	7	1	3	1	8	0	128	0	7.29	0.81	9.00	0.27	21.1	2.3	.250	1.89	6.75
7	Carlos Ramirez C. Ramirez	0.84	17	0	0		0	2.88	19	0	0	0	25.0	9	8	8	3	12	2	4	0	95	2	6.84	4.32	1.58	1.08	20.0	12.6	.102	2.88	3.24
8	Brad Kilby B. Kilby	0.86	15	1	0	1.000	0	1.16	27	0	0	0	23.1	17	3	4	3	3	0	3	0	90	0	10.41	1.16	9.00	1.16	30.0	3.3	.246	1.54	6.56
9	Orval Overall O. Overall	0.86	18	3	1	.750	0	0.36	35	0	0	6	50.0	27		9	0	16	1	16		183	1	6.30	2.88	2.19	0.00	19.1	8.7	.206	1.62	4.86
10	Luis Severino L. Severino	0.86	16	4	1	.800	0	1.44	35	0	0	0	31.1	15	5	6	1	12	1	4	0	120	1	10.05	3.45	2.92	0.29	29.2	10.0	.197	1.72	4.31
11	Cam Hill C. Hill	0.87	18	2	0	1.000	0	4.91	16	0	0	1	18.1	11	10	11	4	5	2	5	1	72	0	7.85	2.45	3.20	1.96	22.2	6.9	.156	5.40	5.40
12	Nick Maddox N. Maddox	0.88	21	2	1	.667	0		15	0	0	2	69.2	44		30	0	17	9	16		259	2	1.94	2.20	0.88	0.00	5.8	6.6	.202	3.88	5.68
13	Matt Svanson M. Svanson	0.88	39	4	0	1.000	0	1.94	68	0	0	0	60.1	33	13	14	3	20	4	10	0	234	1	10.14	2.98	3.40	0.45	29.1	8.5	.216	2.09	4.92
14	Tyson Miller T. Miller	0.88	71	7	1	.875	0	2.61	67	0	0	1	86.1	56	25	28	9	20	6	18	0	333	2	6.98	2.08	3.35	0.94	20.1	6.0	.203	2.92	5.84
15	Christy Mathewson C. Mathewson	0.89	56	20	6	.769	0	1.87	76	0	0	19	149.0	119		52	4	13	2	48		570	1	4.59	0.79	5.85	0.24	13.3	2.3	.242	3.14	7.19
16	Tyler Holton T. Holton	0.89	189	16	6	.727	0	2.54	194	0	0	9	241.0	165	68	73	27	50	6	32	3	927	8	7.24	1.87	3.88	1.01	20.9	5.4	.212	2.73	6.16
17	Aaron Sanchez A. Sanchez	0.90	61	4	4	.500	0	2.35	59	0	0	3	80.1	49	21	23	4	23	3	13	1	307	3	6.61	2.58	2.57	0.45	19.2	7.5	.206	2.58	5.49
18	Arnold Carter A. Carter	0.90	22	2	1	.667	0	1.11	8	0	0	3	32.1	21	4	6	0	8	1	15		123	0	2.23	2.23	1.00	0.00	6.5	6.5	.198	1.67	5.85
19	Roberto Osuna R. Osuna	0.90	314	14	18	.438	0	2.74	348	0	0	155	315.0	230	96	101	28	55	13	247	6	1,227	17	9.94	1.57	6.33	0.80	28.4	4.5	.258	2.89	6.57
20	Tejay Antone T. Antone	0.91	40	2	1	.667	0	2.16	75	0	0	3	58.1	28	14	15	4	25	4	7	0	225	2	11.57	3.86	3.00	0.62	33.3	11.1	.205	2.31	4.32
21	Connor Phillips C. Phillips	0.92	21	5	0	1.000	0	2.88	32	0	0	0	25.0	11	8	9	3	12	2	5	0	98	2	11.52	4.32	2.67	1.08	32.7	12.2	.163	3.24	3.96
22	Mason Miller M. Miller	0.92	119	3	4	.429	0	2.65	219	0	0	50	135.2	71	40	47	12	54	3	81	5	521	6	14.53	3.58	4.06	0.80	42.0	10.4	.253	3.12	4.71
23	Dick Hughes D. Hughes	0.93	34	3	2	.600	0	2.37	60	0	0	8	64.2	39	17	17	6	21	2	17	6	249	2	8.35	2.92	2.86	0.84	24.1	8.4	.206	2.37	5.43
24	Emmanuel Clase E. Clase	0.93	365	21	25	.457	0	1.88	349	0	0	182	359.0	266	75	111	15	68	9	297	10	1,412	19	8.75	1.70	5.13	0.38	24.7	4.8	.258	2.78	6.67
25	Tillar Cavet T. Cavet	0.93	27	3	1	.750	0	1.87	28	0	0	3	81.2	61	17	28	1	15	2	18		302	2	3.09	1.65	1.87	0.11	9.3	5.0	.234	3.09	6.72