Carlos Duran has the highest WHIP by a relief pitcher this season, with a WHIP of 12.00.

Interpreted as:

relief pitcher with highest whip this regular season

	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	H/9
1	Carlos Duran C. Duran	12.00	2025	ATH	1	0	0		0	81.00	0	0	0	0	0.1	1	3	3	0	3	0	0	0	5	0	0.00	81.00	0.00	0.00	0.0	60.0	.500	81.00	27.00
2	Emmanuel Rivera E. Rivera	10.00	2025	BAL	1	0	0		0	72.00	0	0	0	0	1.0	8	8	8	1	2	0	1	0	13	0	0.00	18.00	0.00	9.00	0.0	15.4	.700	72.00	72.00
3	Amed Rosario A. Rosario	7.00	2025	WSH	1	0	0		0	36.00	0	0	0	0	1.0	5	4	4	1	2	0	1	0	10	0	0.00	18.00	0.00	9.00	0.0	20.0	.571	36.00	45.00
4	Jorge Mateo J. Mateo	7.00	2025	BAL	1	0	0		0	45.00	0	0	0	0	1.0	5	5	5	1	2	1	0	0	11	0	0.00	18.00	0.00	9.00	0.0	18.2	.571	45.00	45.00
5	Daniel Robert D. Robert	6.00	2025	PHI	2	0	0		0	13.50	2	0	0	0	0.2	1	1	1	0	3	0	1	0	6	0	27.00	40.50	0.67	0.00	33.3	50.0	1.000	13.50	13.50
6	Ty Adcock T. Adcock	6.00	2025	NYM	1	0	0		0	0.00	0	0	0	0	0.1	1	0	0	0	1	0	1	0	4	0	0.00	27.00	0.00	0.00	0.0	25.0	.333	0.00	27.00
7	Luke Little L. Little	6.00	2025	CHC	1	0	0		0	13.50	0	0	0	0	0.2	0	1	1	0	4	0	0	0	6	0	0.00	54.00	0.00	0.00	0.0	66.7	.000	13.50	0.00
8	Pablo Reyes P. Reyes	5.00	2025	NYY	1	0	0		0	27.00	0	0	0	0	1.0	5	3	3	1	0	0	1	0	8	0	0.00	0.00		9.00	0.0	0.0	.571	27.00	45.00
9	Abraham Toro A. Toro	5.00	2025	BOS	1	0	0		0	18.00	0	0	0	0	1.0	4	2	2	0	1	0	1	0	8	0	0.00	9.00	0.00	0.00	0.0	12.5	.571	18.00	36.00
10	Hunter Stratton H. Stratton	4.20	2025	PIT	2	0	0		0	21.60	0	0	0	0	1.2	6	4	4	1	1	0	1	0	12	0	0.00	5.40	0.00	5.40	0.0	8.3	.500	21.60	32.40
11	Leo Rivas L. Rivas	4.00	2025	SEA	1	0	0		0	0.00	0	0	0	0	1.0	3	0	0	0	1	0	1	0	6	0	0.00	9.00	0.00	0.00	0.0	16.7	.600	0.00	27.00
12	Nathan Wiles N. Wiles	4.00	2025	ATL	1	0	0		0	27.00	1	0	0	0	1.0	4	3	3	0	0	0	1	0	7	0	9.00	0.00		0.00	14.3	0.0	.667	27.00	36.00
13	Grant Wolfram G. Wolfram	3.75	2025	BAL	2	0	0		0	13.50	1	0	0	0	1.1	3	2	2	0	2	0	0	0	9	0	6.75	13.50	0.50	0.00	11.1	22.2	.500	13.50	20.25
14	Jhonny Pereda J. Pereda	3.67	2025	ATH	3	0	0		0	21.00	3	0	0	0	3.0	9	7	7	1	2	0	3	0	20	0	9.00	6.00	1.50	3.00	15.0	10.0	.571	21.00	27.00
15	Javier Sanoja J. Sanoja	3.60	2025	MIA	4	0	0		0	19.80	0	0	0	0	5.0	16	11	11	2	2	0	4	0	32	0	0.00	3.60	0.00	3.60	0.0	6.3	.500	19.80	28.80
16	Joe La Sorsa J. La Sorsa	3.50	2025	CIN	2	0	0		0	18.00	0	0	0	0	2.0	5	4	4	1	2	0	0	0	12	0	0.00	9.00	0.00	4.50	0.0	16.7	.444	18.00	22.50
17	Michael Kopech M. Kopech	3.00	2025	LAD	2	0	0		0	0.00	1	0	0	0	1.1	1	0	0	0	3	0	1	0	8	0	6.75	20.25	0.33	0.00	12.5	37.5	.250	0.00	6.75
18	Trevor Richards T. Richards	3.00	2025	KCR	3	0	0		0	12.00	2	0	0	0	3.0	7	4	4	0	2	0	2	0	18	3	6.00	6.00	1.00	0.00	11.1	11.1	.500	12.00	21.00
19	Wade Miley W. Miley	3.00	2025	CIN	1	0	0		0	18.00	0	0	0	0	2.0	6	4	4	1	0	0	1	0	13	0	0.00	0.00		4.50	0.0	0.0	.417	18.00	27.00
20	Willie MacIver W. MacIver	3.00	2025	ATH	1	0	0		0	0.00	0	0	0	0	1.0	3	0	0	0	0	0	1	0	6	0	0.00	0.00		0.00	0.0	0.0	.500	0.00	27.00
21	Tyler Wade T. Wade	3.00	2025	SDP	1	0	0		0	9.00	0	0	0	0	1.0	2	1	1	0	1	0	1	0	6	0	0.00	9.00	0.00	0.00	0.0	16.7	.400	9.00	18.00
22	Austin Hedges A. Hedges	3.00	2025	CLE	1	0	0		0	9.00	1	0	0	0	1.0	2	1	1	0	1	0	1	0	6	0	9.00	9.00	1.00	0.00	16.7	16.7	.500	9.00	18.00
23	Cody Poteet C. Poteet	3.00	2025	BAL	1	0	0		0	16.88	1	0	0	0	2.2	6	5	5	0	2	0	0	0	16	0	3.38	6.75	0.50	0.00	6.3	12.5	.462	16.88	20.25
24	Gary Sánchez G. Sánchez	3.00	2025	BAL	1	0	0		0	36.00	0	0	0	0	1.0	2	4	4	1	1	1	1	0	7	0	0.00	9.00	0.00	9.00	0.0	14.3	.250	36.00	18.00
25	J.P. Feyereisen	3.00	2025	TOT	4	0	2	.000	0	11.25	4	0	0	0	4.0	11	5	7	2	1	0	3	1	23	0	9.00	2.25	4.00	4.50	17.4	4.3	.563	15.75	24.75