Walter Johnson has pitched in the most career games for the Washington Senators, with 802 games.

Interpreted as:

most regular-season games as a twins pitcher

	NAME	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%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Walter Johnson W. Johnson	802	417	279	.599	666	2.17	3,509	531	110	34	5914.1	4,913	1,424	1,902	97	1,363	205	127		23,405	154	5.34	2.07	2.57	0.15	15.0	5.8	1.06	.264	2.89	68	2.42	76	7.48	472.8
2	Eddie Guardado E. Guardado	648	37	48	.435	25	4.53	610	0	0	116	704.2	674	355	368	100	270	11	258	31	3,009	22	7.79	3.45	2.26	1.28	20.3	9.0	1.34	.284	4.70	96	4.38	96	8.61	11.8
3	Rick Aguilera R. Aguilera	490	40	47	.460	30	3.50	586	5	0	254	694.0	641	270	298	77	179	15	434	29	2,865	26	7.60	2.32	3.27	1.00	20.5	6.2	1.18	.281	3.86	77	3.57	82	8.31	59.3
4	Jim Kaat J. Kaat	484	190	159	.544	433	3.34	1,851	133	23	5	3014.1	2,982	1,118	1,343	279	729	96	20	61	12,642	106	5.53	2.18	2.54	0.83	14.6	5.8	1.23	.279	4.01	91	3.33	88	8.90	148.3
5	Firpo Marberry F. Marberry	470	117	71	.622	133	3.59	667	64	5	94	1654.0	1,620	659	769	69	568	37	251		6,994	10	3.63	3.09	1.17	0.38	9.5	8.1	1.32	.274	4.18	85	3.93	94	8.81	41.7
6	Joe Nathan J. Nathan	460	24	13	.649	0	2.16	561	0	0	260	463.1	309	111	118	34	134	11	394	17	1,827	22	10.90	2.60	4.19	0.66	30.7	7.3	0.96	.253	2.29	50	2.57	61	6.00	89.2
7	Camilo Pascual C. Pascual	432	145	141	.507	331	3.66	1,885	119	31	10	2465.0	2,283	1,002	1,127	214	909	47	60	42	10,471	69	6.88	3.32	2.07	0.78	18.0	8.7	1.29	.279	4.11	95	3.27	84	8.34	176
8	Matt Guerrier M. Guerrier	420	19	26	.422	3	3.40	322	0	0	5	500.0	470	189	204	59	157	17	102	21	2,099	28	5.80	2.83	2.05	1.06	15.3	7.5	1.25	.266	3.67	79	4.40	104	8.46	-10.6
9	Glen Perkins G. Perkins	409	35	25	.583	44	3.88	504	0	0	120	624.1	646	269	290	74	158	22	228	13	2,635	21	7.27	2.28	3.19	1.07	19.1	6.0	1.29	.305	4.18	92	3.89	94	9.31	14.4
10	Juan Rincon J. Rincon	386	30	26	.536	3	3.69	412	0	0	3	441.0	414	181	208	34	182	17	101	19	1,899	25	8.41	3.71	2.26	0.69	21.7	9.6	1.35	.303	4.24	83	3.56	83	8.45	37.1
11	Brad Radke B. Radke	378	148	139	.516	377	4.22	1,467	37	10	0	2451.0	2,643	1,150	1,233	326	445	62	0	12	10,244	28	5.39	1.63	3.30	1.20	14.3	4.3	1.26	.292	4.53	90	4.24	94	9.71	75.2
12	Jesse Crain J. Crain	376	33	21	.611	0	3.42	264	0	0	3	382.0	339	145	165	32	141	16	94	20	1,607	10	6.22	3.32	1.87	0.75	16.4	8.8	1.26	.266	3.89	79	4.03	95	7.99	9
13	Jim Perry J. Perry	376	128	90	.587	249	3.15	1,025	61	17	5	1883.1	1,711	659	736	166	541	50	35	56	7,791	37	4.90	2.59	1.89	0.79	13.2	6.9	1.20	.257	3.52	89	3.50	96	8.18	35.4
14	LaTroy Hawkins L. Hawkins	366	44	57	.436	98	5.05	532	2	0	44	818.0	956	459	497	105	290	14	117	9	3,614	50	5.85	3.19	1.83	1.16	14.7	8.0	1.52	.318	5.47	105	4.57	100	10.52	-1.6
15	Mike Trombley M. Trombley	365	30	34	.469	36	4.53	528	0	0	34	645.2	668	325	353	90	244	24	132	24	2,815	33	7.36	3.40	2.16	1.25	18.8	8.7	1.41	.300	4.92	96	4.49	99	9.31	4
16	Brian Duensing B. Duensing	354	41	37	.526	61	4.13	428	2	2	2	649.1	691	298	324	64	208	16	50	22	2,783	21	5.93	2.88	2.06	0.89	15.4	7.5	1.38	.303	4.49	100	4.07	100	9.58	-0.4
17	Bert Blyleven B. Blyleven	348	149	138	.519	345	3.28	2,035	141	29	0	2566.2	2,369	934	1,044	243	674	80	2	37	10,542	56	7.14	2.36	3.02	0.85	19.3	6.4	1.19	.283	3.66	84	3.14	81	8.31	202.7
18	Caleb Thielbar C. Thielbar	347	23	12	.657	0	3.38	347	0	0	4	320.0	273	120	134	33	107	4	73	9	1,326	11	9.76	3.01	3.24	0.93	26.2	8.1	1.19	.287	3.77	83	3.35	82	7.68	25.4
19	J.C. Romero	327	25	20	.556	22	4.35	336	0	0	2	407.2	395	197	215	38	209	23	59	26	1,803	27	7.42	4.61	1.61	0.84	18.6	11.6	1.48	.298	4.75	94	4.30	98	8.72	2.9
20	Al Worthington A. Worthington	327	37	31	.544	0	2.62	399	0	0	88	473.1	379	138	162	28	186	5	213	32	1,953	22	7.59	3.54	2.15	0.53	20.4	9.5	1.19	.263	3.08	76	2.81	78	7.21	41.9
21	Taylor Rogers T. Rogers	319	17	18	.486	0	3.15	361	0	0	50	314.2	286	110	121	30	76	17	88	15	1,296	8	10.33	2.17	4.75	0.86	27.9	5.9	1.15	.315	3.46	72	3.00	68	8.18	48
22	Chuck Stobbs C. Stobbs	302	66	92	.418	155	4.27	567	41	7	16	1238.1	1,343	588	673	128	395	18	73	29	5,399	21	4.12	2.87	1.44	0.93	10.5	7.3	1.40	.283	4.89	110	3.88	99	9.76	3.8
23	Sid Hudson S. Hudson	296	88	130	.404	239	4.38	597	112	11	6	1819.1	1,992	886	1,040	109	720	35	40		8,030	27	2.95	3.56	0.83	0.54	7.4	9.0	1.49	.287	5.14	110	3.94	101	9.85	-6.2
24	Tyler Duffey T. Duffey	295	29	27	.518	37	4.57	466	0	0	6	475.0	478	241	264	66	137	15	40	11	2,024	26	8.83	2.60	3.40	1.25	23.0	6.8	1.29	.307	5.00	107	3.95	93	9.06	17.7
25	Pedro Ramos P. Ramos	290	78	112	.411	199	4.19	740	58	10	12	1544.1	1,579	719	808	210	491	46	56	34	6,625	23	4.31	2.86	1.51	1.22	11.2	7.4	1.34	.266	4.71	106	4.34	109	9.20	-58.7