Mariano Rivera has the best career ERA for the Yankees, with an ERA of 2.21.

Interpreted as:

best yankees with a minimum of 750 IP pitcher all-time

	NAME	ERA	IP	G	W	L	W%	GS	SO	CG	SHO	SV	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	Mariano Rivera M. Rivera	2.21	1283.2	1,115	82	60	.577	10	1,173	0	0	652	998	315	340	71	286	46	952	41	5,103	13	8.22	2.01	4.10	0.50	23.0	5.6	1.00	.263	2.38	49	2.76	61	7.00	246.7
2	Russ Ford R. Ford	2.54	1112.2	143	73	56	.566	129	553	100	10	3	1,010	314	458	27	287	24	14		4,432	16	4.47	2.32	1.93	0.22	12.5	6.5	1.17	.278	3.70	80	2.78	89	8.17	45.5
3	Jack Chesbro J. Chesbro	2.58	1952.0	269	128	93	.579	227	913	168	18	2	1,752	560	795	26	434	55	36		7,731	42	4.21	2.00	2.10	0.12	11.8	5.6	1.12	.274	3.67	92	2.39	87	8.08	91.9
4	Al Orth A. Orth	2.72	1172.2	163	72	73	.497	145	402	102	14	0	1,096	355	484	16	230	21	16		4,642	19	3.09	1.77	1.75	0.12	8.7	5.0	1.13	.272	3.71	98	2.48	92	8.41	38.2
5	Tiny Bonham T. Bonham	2.73	1176.2	158	79	50	.612	141	348	91	17	6	1,108	357	399	71	206	4	11		4,731	3	2.66	1.58	1.69	0.54	7.4	4.4	1.12	.253	3.05	78	3.25	92	8.47	36.1
6	George Mogridge G. Mogridge	2.73	965.2	171	48	57	.457	103	278	61	8	9	929	293	393	24	220	37	48		3,868	11	2.59	2.05	1.26	0.22	7.2	5.7	1.19	.273	3.66	91	2.92	97	8.66	10.2
7	Hank Borowy H. Borowy	2.74	780.2	107	56	30	.651	96	340	53	11	3	683	238	285	38	284	3	7		3,240	18	3.92	3.27	1.20	0.44	10.5	8.8	1.24	.250	3.29	81	3.34	98	7.87	6.7
8	Whitey Ford W. Ford	2.75	3170.1	498	236	106	.690	438	1,956	156	45	11	2,766	967	1,107	228	1,086	28	35	44	13,036	75	5.55	3.08	1.80	0.65	15.0	8.3	1.22	.261	3.14	75	3.26	88	7.85	156.9
9	Spud Chandler S. Chandler	2.84	1485.0	211	109	43	.717	184	614	109	26	6	1,327	468	549	64	463	19	14		6,102	20	3.72	2.81	1.33	0.39	10.1	7.6	1.21	.256	3.33	73	3.30	88	8.04	71.2
10	Ray Fisher R. Fisher	2.91	1380.1	219	76	78	.494	166	583	88	13	5	1,337	447	586	24	393	34	37		5,530	28	3.80	2.56	1.48	0.16	10.5	7.1	1.25	.292	3.82	97	2.79	93	8.72	32.9
11	Mel Stottlemyre M. Stottlemyre	2.97	2661.1	360	164	139	.541	356	1,257	152	40	1	2,435	878	1,003	171	809	44	3	75	10,972	57	4.25	2.74	1.55	0.58	11.5	7.4	1.22	.260	3.39	90	3.36	98	8.23	14.4
12	Ray Caldwell R. Caldwell	3.00	1718.1	248	96	99	.492	196	803	150	17	4	1,519	572	684	41	576	52	42		6,870	22	4.21	3.02	1.39	0.21	11.7	8.4	1.22	.274	3.58	99	2.95	98	7.96	16.2
13	Fritz Peterson F. Peterson	3.10	1857.1	288	109	106	.507	265	893	81	18	1	1,796	640	747	139	332	32	9	64	7,558	30	4.33	1.61	2.69	0.67	11.8	4.4	1.15	.269	3.62	95	3.10	91	8.70	61.1
14	Stan Bahnsen S. Bahnsen	3.10	985.2	153	55	52	.514	139	534	36	8	2	901	340	382	88	312	9	10	27	4,086	29	4.88	2.85	1.71	0.80	13.1	7.6	1.23	.259	3.49	94	3.54	103	8.23	-17.7
15	Dave Righetti D. Righetti	3.11	1136.2	522	74	61	.548	76	940	13	2	224	999	393	448	65	473	16	379	37	4,811	33	7.44	3.75	1.99	0.51	19.5	9.8	1.30	.282	3.55	79	3.12	78	7.91	110.1
16	Jack Warhop J. Warhop	3.12	1412.2	221	69	92	.429	150	463	105	4	7	1,366	489	641	28	400	114	60		5,725	13	2.95	2.55	1.16	0.18	8.1	7.0	1.25	.283	4.08	105	3.19	109	8.70	-28.8
17	Bob Shawkey B. Shawkey	3.12	2488.2	415	168	131	.562	274	1,163	164	26	27	2,304	862	1,014	102	855	42	105		10,211	36	4.21	3.09	1.36	0.37	11.4	8.4	1.27	.274	3.67	85	3.44	95	8.33	52.3
18	Gerrit Cole G. Cole	3.12	759.0	125	59	28	.678	125	915	6	4	0	593	263	279	102	185	19	0	2	3,018	13	10.85	2.19	4.95	1.21	30.3	6.1	1.03	.273	3.31	76	3.32	78	7.03	78.4
19	Rudy May R. May	3.12	841.2	184	54	46	.540	102	586	30	5	7	715	292	340	48	281	11	41	12	3,451	29	6.27	3.00	2.09	0.51	17.0	8.1	1.18	.264	3.64	85	3.03	81	7.65	69.2
20	Urban Shocker U. Shocker	3.14	932.0	152	61	37	.622	111	279	57	5	5	951	325	391	48	248	12	25		3,876	9	2.69	2.39	1.13	0.46	7.2	6.4	1.29	.275	3.78	85	3.74	100	9.18	-3.2
21	Jack Quinn J. Quinn	3.15	1270.0	228	81	65	.555	145	478	83	6	6	1,337	444	600	27	291	31	62		5,223	23	3.39	2.06	1.64	0.19	9.2	5.6	1.28	.298	4.25	94	2.89	89	9.47	55.9
22	Ed Lopat E. Lopat	3.19	1497.1	217	113	59	.657	202	502	91	20	2	1,507	530	619	116	405	29	8	3	6,235	9	3.02	2.43	1.24	0.70	8.1	6.5	1.28	.268	3.72	81	3.72	96	9.06	24.8
23	Al Downing A. Downing	3.23	1235.1	208	72	57	.558	175	1,028	46	12	2	1,014	443	492	96	526	11	18	20	5,158	40	7.49	3.83	1.95	0.70	19.9	10.2	1.25	.263	3.58	96	3.18	91	7.39	40.8
24	Carl Mays C. Mays	3.25	1090.0	164	80	39	.672	124	273	91	9	11	1,114	394	476	47	279	32	33		4,526	6	2.25	2.30	0.98	0.39	6.0	6.2	1.28	.274	3.93	82	3.82	98	9.20	7.1
25	Ron Guidry R. Guidry	3.29	2392.0	368	170	91	.651	323	1,778	95	26	4	2,198	874	953	226	633	13	23	24	9,794	56	6.69	2.38	2.81	0.85	18.2	6.5	1.18	.276	3.59	84	3.26	82	8.27	192