which relief pitcher had the lowest whip last season with at least 50 gp

Aroldis Chapman had the lowest WHIP by a relief pitcher with 50+ games pitched in 2025, with a WHIP of 0.70.

	NAME	WHIP	G	SEASON	TM	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	Aroldis Chapman A. Chapman	0.70	67	2025	BOS	5	3	.625	0	1.17	85	0	0	32	61.1	28	8	9	3	15	0	43	0	228	6	12.47	2.20	5.67	0.44	37.3	6.6	.200	1.32	4.11
2	Shawn Armstrong S. Armstrong	0.83	69	2025	TEX	4	2	.667	0	2.19	68	0	0	9	70.0	39	17	19	4	19	6	22	0	270	3	8.74	2.44	3.58	0.51	25.2	7.0	.202	2.44	5.01
3	Taylor Clarke T. Clarke	0.85	51	2025	KCR	1	1	.500	0	3.25	44	0	0	1	55.1	38	20	20	8	9	1	15	0	206	5	7.16	1.46	4.89	1.30	21.4	4.4	.208	3.25	6.18
4	Dennis Santana D. Santana	0.87	70	2025	PIT	4	5	.444	0	2.18	60	0	0	16	70.1	44	17	18	5	17	3	34	0	270	0	7.68	2.18	3.53	0.64	22.2	6.3	.211	2.30	5.63
5	Gabe Speier G. Speier	0.87	76	2025	SEA	4	3	.571	0	2.61	82	0	0	0	62.0	43	18	19	5	11	5	4	1	243	1	11.90	1.60	7.45	0.73	33.7	4.5	.271	2.76	6.24
6	Edwin Díaz E. Díaz	0.87	62	2025	NYM	6	3	.667	0	1.63	98	0	0	28	66.1	37	12	14	4	21	8	48	0	258	7	13.30	2.85	4.67	0.54	38.0	8.1	.260	1.90	5.02
7	Caleb Thielbar C. Thielbar	0.88	67	2025	CHC	3	4	.429	0	2.64	56	0	0	1	58.0	38	17	17	5	13	0	4	1	220	0	8.69	2.02	4.31	0.78	25.5	5.9	.226	2.64	5.90
8	Randy Rodríguez R. Rodríguez	0.89	50	2025	SFG	3	5	.375	0	1.78	67	0	0	4	50.2	34	10	12	4	11	4	15	0	198	2	11.90	1.95	6.09	0.71	33.8	5.6	.268	2.13	6.04
9	Adrian Morejon A. Morejon	0.90	75	2025	SDP	13	6	.684	0	2.08	70	0	0	3	73.2	49	17	23	2	17	0	9	3	286	2	8.55	2.08	4.12	0.24	24.5	5.9	.239	2.81	5.99
10	Steven Okert S. Okert	0.90	67	2025	HOU	3	2	.600	0	2.96	82	0	0	1	70.0	44	23	24	6	19	2	7	1	270	0	10.54	2.44	4.32	0.77	30.4	7.0	.236	3.09	5.66
11	Robert Suarez R. Suarez	0.90	70	2025	SDP	4	6	.400	0	2.97	75	0	0	40	69.2	47	23	24	6	16	2	56	2	269	1	9.69	2.07	4.69	0.78	27.9	5.9	.241	3.10	6.07
12	Mason Miller M. Miller	0.91	60	2025	TOT	1	2	.333	0	2.63	104	0	0	22	61.2	28	18	19	5	28	1	37	2	234	3	15.18	4.09	3.71	0.73	44.4	12.0	.240	2.77	4.09
13	Emilio Pagán E. Pagán	0.92	70	2025	CIN	2	4	.333	0	2.88	81	0	0	32	68.2	41	22	26	10	22	2	56	0	270	1	10.62	2.88	3.68	1.31	30.0	8.1	.200	3.41	5.37
14	Tyler Rogers T. Rogers	0.94	81	2025	TOT	4	6	.400	0	1.98	48	0	0	0	77.1	66	17	20	4	7	1	13	0	299	0	5.59	0.81	6.86	0.47	16.1	2.3	.259	2.33	7.68
15	Braydon Fisher B. Fisher	0.95	51	2025	TOR	7	0	1.000	0	1.85	61	0	0	0	48.2	28	10	10	2	18	3	12	1	193	0	11.28	3.33	3.39	0.37	31.6	9.3	.239	1.85	5.18
16	Garrett Cleavinger G. Cleavinger	0.95	67	2025	TBR	2	6	.250	0	2.35	82	0	0	2	61.1	40	16	17	9	18	7	9	0	243	1	12.03	2.64	4.56	1.32	33.7	7.4	.244	2.49	5.87
17	Kenley Jansen K. Jansen	0.95	62	2025	LAA	5	4	.556	0	2.59	57	0	0	29	59.0	37	17	18	8	19	1	47	2	234	0	8.69	2.90	3.00	1.22	24.4	8.1	.195	2.75	5.64
18	Nick Mears N. Mears	0.97	63	2025	MIL	5	3	.625	0	3.49	46	0	0	1	56.2	42	22	25	7	13	1	4	1	221	2	7.31	2.06	3.54	1.11	20.8	5.9	.227	3.97	6.67
19	Brad Keller B. Keller	0.98	67	2025	CHC	4	2	.667	0	2.10	73	0	0	3	68.2	45	16	18	4	22	6	12	0	273	1	9.57	2.88	3.32	0.52	26.7	8.1	.244	2.36	5.90
20	Dylan Lee D. Lee	0.98	74	2025	ATL	2	4	.333	0	3.29	76	0	0	2	68.1	53	25	27	13	14	0	6	1	266	3	10.01	1.84	5.43	1.71	28.6	5.3	.245	3.56	6.98
21	Andrew Kittredge A. Kittredge	0.98	54	2025	TOT	4	3	.571	0	3.40	64	0	0	5	53.0	41	20	22	7	11	0	17	1	208	1	10.87	1.87	5.82	1.19	30.8	5.3	.270	3.74	6.96
22	Alex Vesia A. Vesia	0.99	68	2025	LAD	4	2	.667	0	3.02	80	0	0	5	59.2	37	20	21	9	22	5	11	3	237	3	12.07	3.32	3.64	1.36	33.8	9.3	.231	3.17	5.58
23	Raisel Iglesias R. Iglesias	1.00	70	2025	ATL	4	6	.400	0	3.21	73	0	0	29	67.1	51	24	25	8	16	2	57	2	266	0	9.76	2.14	4.56	1.07	27.4	6.0	.257	3.34	6.82
24	Cade Smith C. Smith	1.00	76	2025	CLE	8	5	.615	0	2.93	104	0	0	16	73.2	55	24	31	4	19	4	30	3	300	3	12.71	2.32	5.47	0.49	34.7	6.3	.302	3.79	6.72
25	Tanner Banks T. Banks	1.01	68	2025	PHI	6	2	.750	0	3.17	59	0	0	1	65.1	54	23	24	9	12	1	10	1	259	2	8.13	1.65	4.92	1.24	22.8	4.6	.253	3.31	7.44

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StatMuse has game-level data for games pitched going back to the 1908 season.

Some of the information used here was obtained free of charge from Retrosheet.

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TEAM	W	L	PCT	GB
Yankees	24	11	.686
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DATE	MATCHUP			TIME (ET)
Tue 5/5	BOS	@	DET	6:40 PM
Wed 5/6	BOS	@	DET	6:40 PM
Thu 5/7	TBR	@	BOS	7:10 PM
Fri 5/8	TBR	@	BOS	7:10 PM
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NL East	W	L	PCT	GB
Braves	25	11	.694
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Marlins	16	19	.457	8.5
Phillies	15	20	.429	9.5
Mets	13	22	.371	11.5
NL Central	W	L	PCT	GB
Cubs	23	12	.657
Cardinals	21	14	.600	2.0
Reds	20	15	.571	3.0
Pirates	19	16	.543	4.0
Brewers	18	16	.529	4.5
NL West	W	L	PCT	GB
Dodgers	22	13	.629
Padres	20	14	.588	1.5
Diamondbacks	16	17	.485	5.0
Giants	14	21	.400	8.0
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Orioles	15	20	.429	9.0
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Guardians	18	18	.500
White Sox	17	18	.486	0.5
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Twins	15	20	.429	2.5
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Sun 4/19	KCR	@	NYY	0-7
Sun 4/19	MIL	@	MIA	3-5
Sun 4/19	TOR	@	AZ	10-4
Mon 4/20	DET	@	BOS	6-8
Mon 4/20	HOU	@	CLE	9-2

Schedule

DATE	MATCHUP			TIME (ET)
Tue 5/5	BOS	@	DET	6:40 PM
Tue 5/5	ATH	@	PHI	6:40 PM
Tue 5/5	TOR	@	TBR	6:40 PM
Tue 5/5	BAL	@	MIA	6:40 PM
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Aroldis Chapman had the lowest WHIP by a relief pitcher with 50+ games pitched in 2025, with a WHIP of 0.70.

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