The Pittsburgh Pirates have 4.46 runs allowed per game pitched all-time.

	TEAM	R/G	R	G	SEASON	W%	W	L	GS	ERA	SO	CG	SHO	SV	IP	H	ER	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Alleghenys	5.28	417	79	1882	.500	39	39	79	2.79	253	77		0	695.2	696	216	4	83			2,581	29	3.27	1.07	3.05	0.05	9.8	3.2	1.12		5.39	9.00
2	Alleghenys	7.43	728	98	1883	.316	31	67	98	4.62	271	82		1	867.2	1,140	445	21	151			3,984	73	2.81	1.57	1.79	0.22	6.8	3.8	1.49		7.55	11.82
3	Alleghenys	6.59	725	110	1884	.278	30	78	110	4.35	338	108		0	943.1	1,059	456	25	216	56		4,266	79	3.22	2.06	1.56	0.24	7.9	5.1	1.35	.285	6.92	10.10
4	Alleghenys	4.86	539	111	1885	.505	56	55	111	2.92	454	104		0	1011.0	918	328	14	201	36		4,196	72	4.04	1.79	2.26	0.12	10.8	4.8	1.11	.259	4.80	8.17
5	Alleghenys	4.62	647	140	1886	.584	80	57	140	2.83	515	137		1	1226.0	1,130	385	10	299	34		5,140	58	3.78	2.19	1.72	0.07	10.0	5.8	1.17	.262	4.75	8.30
6	Alleghenys	6	750	125	1887	.444	55	69	125	4.12	248	123		0	1108.2	1,287	507	39	246	33		4,864	41	2.01	2.00	1.01	0.32	5.1	5.1	1.38	.290	6.09	10.45
7	Alleghenys	4.17	580	139	1888	.493	66	68	139	2.67	367	135		0	1203.1	1,190	357	23	223	30		5,026	47	2.74	1.67	1.65	0.17	7.3	4.4	1.17	.266	4.34	8.90
8	Alleghenys	5.98	801	134	1889	.462	61	71	134	4.51	345	125		1	1130.2	1,296	566	42	374	30		5,041	63	2.75	2.98	0.92	0.33	6.8	7.4	1.48	.295	6.38	10.32
9	Alleghenys	8.95	1,235	138	1890	.169	23	113	138	5.97	381	119		0	1176.1	1,520	780	52	573	79		5,664	115	2.91	4.38	0.66	0.40	6.7	10.1	1.78	.321	9.45	11.63
10	Pirates	5.43	744	137	1891	.407	55	80	137	2.89	446	122		3	1197.2	1,160	384	30	465	59		5,266	55	3.35	3.49	0.96	0.23	8.5	8.8	1.36	.265	5.59	8.72
11	Pirates	5.14	796	155	1892	.523	80	73	155	3.10	455	130		1	1347.1	1,300	464	28	537	58		5,936	46	3.04	3.59	0.85	0.19	7.7	9.0	1.36	.262	5.32	8.68
12	Pirates	5.85	766	131	1893	.628	81	48	131	4.08	280	104		2	1167.0	1,232	529	29	504	57		5,246	32	2.16	3.89	0.56	0.22	5.3	9.6	1.49	.275	5.91	9.50
13	Pirates	7.38	981	133	1894	.500	65	65	133	5.62	308	106		0	1170.2	1,563	731	39	466	39		5,439	21	2.37	3.58	0.66	0.30	5.7	8.6	1.73	.332	7.54	12.02
14	Pirates	5.92	799	135	1895	.538	71	61	135	4.10	383	107		6	1179.2	1,279	537	19	500	85		5,283	44	2.92	3.81	0.77	0.14	7.2	9.5	1.51	.293	6.10	9.76
15	Pirates	5.66	741	131	1896	.512	66	63	131	4.30	362	108		1	1159.1	1,286	554	18	439	66		5,119	42	2.81	3.41	0.82	0.14	7.1	8.6	1.49	.299	5.75	9.98
16	Pirates	6.19	835	135	1897	.458	60	71	135	4.67	342	112		2	1153.1	1,397	599	22	318	65		5,092	31	2.67	2.48	1.08	0.17	6.7	6.2	1.49	.316	6.52	10.90
17	Pirates	4.57	694	152	1898	.486	72	76	152	3.41	330	131		3	1323.2	1,400	501	14	346	65		5,609	18	2.24	2.35	0.95	0.10	5.9	6.2	1.32	.286	4.72	9.52
18	Pirates	4.97	771	155	1899	.510	76	73	155	3.61	338	118		4	1373.0	1,471	551	27	438	68		5,884	22	2.22	2.87	0.77	0.18	5.7	7.4	1.39	.288	5.05	9.64
19	Pirates	4.37	612	140	1900	.568	79	60	140	3.06	415	114		1	1229.0	1,232	418	24	295	64		5,092	28	3.04	2.16	1.41	0.18	8.2	5.8	1.24	.281	4.48	9.02
20	Pirates	3.81	534	140	1901	.647	90	49	140	2.58	505	119	15	4	1244.2	1,198	357	20	244	60		5,071	21	3.65	1.76	2.07	0.14	10.0	4.8	1.16	.278	3.86	8.66
21	Pirates	3.1	440	142	1902	.741	103	36	142	2.30	564	131	21	3	1264.2	1,142	323	4	250	61		5,048	19	4.01	1.78	2.26	0.03	11.2	5.0	1.10	.273	3.13	8.13
22	Pirates	4.36	615	141	1903	.650	91	49	141	2.91	454	117	16	5	1251.1	1,215	405	9	384	41		5,197	29	3.27	2.76	1.18	0.06	8.7	7.4	1.28	.280	4.42	8.74
23	Pirates	3.79	592	156	1904	.569	87	66	156	2.89	455	133	15	1	1348.1	1,273	433	13	379	53		5,571	30	3.04	2.53	1.20	0.09	8.2	6.8	1.23	.270	3.95	8.50
24	Pirates	3.68	570	155	1905	.627	96	57	155	2.86	512	113	12	6	1382.2	1,270	440	12	389	59		5,577	36	3.33	2.53	1.32	0.08	9.2	7.0	1.20	.273	3.71	8.27
25	Pirates	3.01	464	154	1906	.608	93	60	154	2.21	532	116	26	2	1358.0	1,234	334	13	309	42		5,387	26	3.53	2.05	1.72	0.09	9.9	5.7	1.14	.272	3.08	8.18
	Total	4.46	97,410	21,843		.500	10,854	10,849	21,843	3.76	100,096	7,796	979	3,153	194613.2	196,554	81,283	13,081	65,104	5,616	3,947	830,950	5,566	4.63	3.01	1.54	0.60	12.0	7.8	1.34	.284	4.50	9.09