Since 2005, Cole Hamels has the most starts against the Nationals, with 39 starts.

Interpreted as:

most regular-season starts by a player against the nats since 2005

	NAME	GS	G	W	L	W%	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	H/9
1	Cole Hamels C. Hamels	39	39	17	9	.654	2.71	252	1	0	0	255.2	205	77	84	25	72	7	0	3	1,039	5	8.87	2.53	3.50	0.88	24.3	6.9	1.08	.264	2.96	7.22
2	Zack Wheeler Z. Wheeler	38	38	14	15	.483	4.30	208	1	0	0	226.0	215	108	111	26	73	9	0	4	953	4	8.28	2.91	2.85	1.04	21.8	7.7	1.27	.297	4.42	8.56
3	Aaron Nola A. Nola	36	36	11	9	.550	3.94	220	1	0	0	205.1	192	90	97	26	61	5	0	4	855	3	9.64	2.67	3.61	1.14	25.7	7.1	1.23	.306	4.25	8.42
4	Tim Hudson T. Hudson	30	30	17	5	.773	2.39	140	1	1	0	203.1	175	54	66	12	47	4	0	2	810	3	6.20	2.08	2.98	0.53	17.3	5.8	1.09	.269	2.92	7.75
5	Kyle Kendrick K. Kendrick	25	27	6	10	.375	5.04	73	0	0	0	139.1	152	78	82	16	43	10	0	1	610	7	4.72	2.78	1.70	1.03	12.0	7.0	1.40	.291	5.30	9.82
6	Anibal Sanchez A. Sanchez	25	26	10	1	.909	2.08	127	0	0	0	155.2	117	36	46	12	59	8	0	2	646	4	7.34	3.41	2.15	0.69	19.7	9.1	1.13	.239	2.66	6.76
7	Julio Teheran J. Teheran	24	24	8	6	.571	3.85	126	0	0	0	140.1	146	60	67	21	55	4	0	3	607	3	8.08	3.53	2.29	1.35	20.8	9.1	1.43	.312	4.30	9.36
8	Jacob deGrom J. deGrom	23	23	10	4	.714	2.30	189	1	1	0	145.0	103	37	45	12	35	3	0	3	564	3	11.73	2.17	5.40	0.74	33.5	6.2	0.95	.280	2.79	6.39
9	Ricky Nolasco R. Nolasco	22	24	12	7	.632	3.63	117	2	2	0	134.0	121	54	56	14	29	6	0	1	555	4	7.86	1.95	4.03	0.94	21.1	5.2	1.12	.275	3.76	8.13
10	Noah Syndergaard N. Syndergaard	21	21	8	6	.571	3.49	109	1	0	0	118.2	106	46	46	13	28	4	0	1	477	6	8.27	2.12	3.89	0.99	22.9	5.9	1.13	.288	3.49	8.04
11	Derek Lowe D. Lowe	21	21	10	8	.556	3.88	103	1	0	0	125.1	123	54	56	16	37	3	0	5	528	2	7.40	2.66	2.78	1.15	19.5	7.0	1.28	.290	4.02	8.83
12	Max Fried M. Fried	19	20	9	5	.643	3.78	97	0	0	0	100.0	108	42	45	4	25	5	0	0	421	5	8.73	2.25	3.88	0.36	23.0	5.9	1.33	.359	4.05	9.72
13	Jake Arrieta J. Arrieta	19	19	2	5	.286	4.59	80	0	0	0	96.0	93	49	54	12	42	7	0	2	415	8	7.50	3.94	1.90	1.13	19.3	10.1	1.41	.296	5.06	8.72
14	Charlie Morton C. Morton	19	20	6	8	.429	5.07	91	0	0	0	99.1	107	56	61	12	39	5	0	0	426	3	8.24	3.53	2.33	1.09	21.4	9.2	1.47	.341	5.53	9.69
15	Clayton Kershaw C. Kershaw	19	20	14	3	.824	2.32	139	0	0	0	124.0	90	32	32	12	26	0	1	0	484	7	10.09	1.89	5.35	0.87	28.7	5.4	0.94	.254	2.32	6.53
16	R.A. Dickey	19	20	5	9	.357	4.11	76	0	0	0	118.1	126	54	59	12	31	3	0	1	500	4	5.78	2.36	2.45	0.91	15.2	6.2	1.33	.302	4.49	9.58
17	Mike Pelfrey M. Pelfrey	19	19	4	7	.364	4.06	67	0	0	0	115.1	120	52	56	8	50	5	0	2	503	2	5.23	3.90	1.34	0.62	13.3	9.9	1.47	.300	4.37	9.36
18	John Smoltz J. Smoltz	19	19	7	6	.538	3.03	110	1	0	0	124.2	99	42	44	7	27	4	0	5	493	4	7.94	1.95	4.07	0.51	22.3	5.5	1.01	.267	3.18	7.15
19	Matt Harvey M. Harvey	18	19	4	8	.333	3.75	99	0	0	0	108.0	103	45	54	13	30	4	0	2	454	1	8.25	2.50	3.30	1.08	21.8	6.6	1.23	.292	4.50	8.58
20	Adam Wainwright A. Wainwright	18	20	10	5	.667	3.27	107	2	1	0	115.2	120	42	45	11	28	7	0	4	496	2	8.33	2.18	3.82	0.86	21.6	5.6	1.28	.318	3.50	9.34
21	Matt Cain M. Cain	18	18	7	6	.538	3.39	97	3	1	0	114.0	98	43	45	11	38	6	0	0	472	2	7.66	3.00	2.55	0.87	20.6	8.1	1.19	.272	3.55	7.74
22	Alex Wood A. Wood	17	17	6	6	.500	3.74	94	0	0	0	96.1	97	40	43	13	23	6	0	3	404	4	8.78	2.15	4.09	1.21	23.3	5.7	1.25	.313	4.02	9.06
23	Dillon Gee D. Gee	17	19	8	5	.615	3.75	77	0	0	0	108.0	106	45	47	19	36	5	0	1	457	2	6.42	3.00	2.14	1.58	16.8	7.9	1.31	.272	3.92	8.83
24	Josh Johnson J. Johnson	17	18	9	1	.900	3.32	102	0	0	0	103.0	89	38	41	6	28	3	0	1	421	3	8.91	2.45	3.64	0.52	24.2	6.7	1.14	.294	3.58	7.78
25	Roy Oswalt R. Oswalt	17	18	5	5	.500	3.61	92	0	0	0	99.2	91	40	42	7	24	7	0	0	406	2	8.31	2.17	3.83	0.63	22.7	5.9	1.15	.304	3.79	8.22