Jose A. Ferrer appeared in the most games for the Nationals in 2025, with 72 games.

	NAME	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%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Jose A. Ferrer J. A. Ferrer	72	2025	WSH	4	4	.500	0	4.48	71	0	0	11	76.1	81	38	41	5	16	7	18	1	324	6	8.37	1.89	4.44	0.59	21.9	4.9	1.27	.338	4.83	107	3.02	72	9.55	9.7
2	Jackson Rutledge J. Rutledge	63	2025	WSH	4	2	.667	0	5.77	65	0	0	0	73.1	87	47	49	16	24	7	17	0	330	6	7.98	2.95	2.71	1.96	19.7	7.3	1.51	.326	6.01	138	5.46	131	10.68	-10.4
3	Cole Henry C. Henry	57	2025	WSH	1	2	.333	0	4.27	52	0	0	2	52.2	43	25	27	7	32	11	13	1	241	2	8.89	5.47	1.63	1.20	21.6	13.3	1.42	.259	4.61	102	5.33	128	7.35	-6.7
4	Brad Lord B. Lord	48	2025	WSH	5	10	.333	19	4.34	108	0	0	0	130.2	126	63	65	17	43	3	2	0	546	1	7.44	2.96	2.51	1.17	19.8	7.9	1.29	.291	4.48	104	4.22	101	8.68	-0.7
5	Kyle Finnegan K. Finnegan	40	2025	WSH	1	4	.200	0	4.38	32	0	0	20	39.0	36	19	21	3	14	1	34	2	163	5	7.38	3.23	2.29	0.69	19.6	8.6	1.28	.292	4.85	105	3.64	87	8.31	2.3
6	Jake Irvin J. Irvin	33	2025	WSH	9	13	.409	33	5.70	124	0	0	0	180.0	195	114	120	38	62	6	0	0	787	3	6.20	3.10	2.00	1.90	15.8	7.9	1.43	.282	6.00	137	5.63	135	9.75	-28.7
7	Mitchell Parker M. Parker	33	2025	WSH	9	16	.360	30	5.68	103	0	0	1	164.2	178	104	116	25	58	4	2	0	725	3	5.63	3.17	1.78	1.37	14.2	8.0	1.43	.286	6.34	136	4.98	119	9.73	-14.6
8	Konnor Pilkington K. Pilkington	32	2025	WSH	2	0	1.000	0	4.45	34	0	0	0	28.1	22	14	16	7	17	2	4	0	123	2	10.80	5.40	2.00	2.22	27.6	13.8	1.38	.238	5.08	107	5.95	143	6.99	-5.5
9	MacKenzie Gore M. Gore	30	2025	WSH	5	15	.250	30	4.17	185	0	0	0	159.2	152	74	75	20	64	5	0	0	680	12	10.43	3.61	2.89	1.13	27.2	9.4	1.35	.325	4.23	100	3.74	90	8.57	7.7
10	Eduardo Salazar E. Salazar	30	2025	WSH	0	1	.000	0	8.38	23	0	0	0	29.0	47	27	29	7	16	1	9	0	150	3	7.14	4.97	1.44	2.17	15.3	10.7	2.17	.388	9.00	201	6.44	154	14.59	-7.2
11	PJ Poulin	28	2025	WSH	2	1	.667	0	3.65	27	0	0	1	24.2	23	10	10	2	13	2	6	0	110	0	9.85	4.74	2.08	0.73	24.5	11.8	1.46	.318	3.65	87	3.82	91	8.39	1
12	Andrew Chafin A. Chafin	26	2025	WSH	1	1	.500	0	2.70	18	0	0	0	20.0	20	6	8	1	12	0	6	0	88	5	8.10	5.40	1.50	0.45	20.5	13.6	1.60	.333	3.60	65	3.78	91	9.00	0.9
13	Jorge López J. López	26	2025	WSH	6	0	1.000	0	6.57	17	0	0	1	24.2	25	18	18	1	7	3	5	0	106	3	6.20	2.55	2.43	0.36	16.0	6.6	1.30	.308	6.57	157	3.49	84	9.12	1.9
14	Zach Brzykcy Z. Brzykcy	26	2025	WSH	0	1	.000	0	9.00	24	0	0	0	23.0	28	23	23	6	12	2	11	0	110	2	9.39	4.70	2.00	2.35	21.8	10.9	1.74	.333	9.00	216	6.26	150	10.96	-5.3
15	Clayton Beeter C. Beeter	24	2025	WSH	0	2	.000	0	2.49	32	0	0	1	21.2	8	6	6	1	14	0	4	0	84	1	13.29	5.82	2.29	0.42	38.1	16.7	1.02	.189	2.49	60	2.71	65	3.32	3.5
16	Shinnosuke Ogasawara S. Ogasawara	23	2025	WSH	1	1	.500	2	6.98	30	0	0	0	38.2	43	30	30	9	17	3	7	0	173	1	6.98	3.96	1.76	2.09	17.3	9.8	1.55	.298	6.98	167	6.15	147	10.01	-8.4
17	Orlando Ribalta O. Ribalta	22	2025	WSH	0	0		0	7.03	25	0	0	0	24.1	28	19	19	6	17	1	7	0	120	0	9.25	6.29	1.47	2.22	20.8	14.2	1.85	.310	7.03	168	6.50	156	10.36	-6.2
18	Lucas Sims L. Sims	18	2025	WSH	1	0	1.000	0	13.86	13	0	0	0	12.1	14	19	19	2	14	7	2	0	72	3	9.49	10.22	0.93	1.46	18.1	19.4	2.27	.333	13.86	332	8.24	197	10.22	-5.5
19	Trevor Williams T. Williams	17	2025	WSH	3	10	.231	17	6.21	65	0	0	0	82.2	106	57	59	11	21	2	0	0	373	1	7.08	2.29	3.10	1.20	17.4	5.6	1.54	.347	6.42	149	4.12	99	11.54	0.5
20	Michael Soroka M. Soroka	16	2025	WSH	3	8	.273	16	4.87	87	0	0	0	81.1	68	44	44	11	24	14	0	0	343	2	9.63	2.66	3.63	1.22	25.4	7.0	1.13	.275	4.87	117	4.15	99	7.52	0.3
21	Mason Thompson M. Thompson	14	2025	WSH	1	1	.500	0	11.81	11	0	0	0	10.2	16	14	16	1	12	0	3	2	60	0	9.28	10.13	0.92	0.84	18.3	20.0	2.63	.417	13.50	283	5.66	136	13.50	-1.7
22	Colin Poche C. Poche	13	2025	WSH	1	2	.333	0	11.42	10	0	0	0	8.2	10	11	12	1	12	0	0	0	46	1	10.38	12.46	0.83	1.04	21.7	26.1	2.54	.391	12.46	274	6.47	155	10.38	-2.2
23	Luis García L. García	10	2025	WSH	0	0		0	0.90	7	0	0	0	10.0	5	1	1	1	2	0	1	0	33	1	6.30	1.80	3.50	0.90	21.2	6.1	0.70	.174	0.90	22	3.63	87	4.50	0.6
24	Cade Cavalli C. Cavalli	10	2025	WSH	3	1	.750	10	4.25	40	0	0	0	48.2	57	23	28	7	15	4	0	0	219	3	7.40	2.77	2.67	1.29	18.3	6.8	1.48	.327	5.18	102	4.53	108	10.54	-1.9
25	Ryan Loutos R. Loutos	10	2025	WSH	1	0	1.000	0	12.00	6	0	0	0	9.0	16	12	16	3	6	1	3	0	52	0	6.00	6.00	1.00	3.00	11.5	11.5	2.44	.361	16.00	288	8.46	203	16.00	-4.2