12 pitchers were tied for allowing the fewest runs in 1966, with 0 runs. The first three are Al Closter, Jim Cosman and Bob Garibaldi.

Interpreted as:

1966 MLB fewest runs allowed by a player

	NAME	R	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	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	Al Closter A. Closter	0	1966	WSH	1	0	0		0	0.00	0	0	0	0	0.1	1	0	0	2	0	1	0	4	0	0.00	54.00	0.00	0.00	0.0	50.0	9.00	.500	0.00	0	20.55	584	27.00	-0.6
2	Jim Cosman J. Cosman	0	1966	STL	1	1	0	1.000	1	0.00	5	1	1	0	9.0	2	0	0	2	1	0	0	30	0	5.00	2.00	2.50	0.00	16.7	6.7	0.44	.091	0.00	0	2.44	71	2.00	1
3	Bob Garibaldi B. Garibaldi	0	1966	SFG	1	0	0		0	0.00	0	0	0	0	1.0	1	0	0	0	0	0	0	4	0	0.00	0.00		0.00	0.0	0.0	1.00	.250	0.00	0	2.55	73	9.00	0.1
4	Bill Graham B. Graham	0	1966	DET	1	0	0		0	0.00	2	0	0	0	2.0	2	0	0	0	0	0	0	8	0	9.00	0.00		0.00	25.0	0.0	1.00	.333	0.00	0	0.55	15	9.00	0.7
5	Bill Henry B. Henry	0	1966	NYY	2	0	0		0	0.00	3	0	0	0	3.0	0	0	0	2	0	0	0	11	0	9.00	6.00	1.50	0.00	27.3	18.2	0.67	.000	0.00	0	2.55	73	0.00	0.3
6	Jesse Hickman J. Hickman	0	1966	KCA	1	0	0		0	0.00	0	0	0	0	1.0	0	0	0	1	0	1	0	3	0	0.00	9.00	0.00	0.00	0.0	33.3	1.00	.000	0.00	0	5.55	153	0.00	-0.2
7	Howie Koplitz H. Koplitz	0	1966	WSH	1	0	0		0	0.00	0	0	0	0	2.0	0	0	0	1	0	0	0	5	0	0.00	4.50	0.00	0.00	0.0	20.0	0.50	.000	0.00	0	4.05	115	0.00	-0.1
8	George Korince G. Korince	0	1966	DET	2	0	0		0	0.00	2	0	0	0	3.0	1	0	0	3	1	2	0	15	0	6.00	9.00	0.67	0.00	13.3	20.0	1.33	.111	0.00	0	5.22	145	3.00	-0.5
9	Jim Roland J. Roland	0	1966	MIN	1	0	0		0	0.00	1	0	0	0	2.0	0	0	0	0	0	1	0	6	0	4.50	0.00		0.00	16.7	0.0	0.00	.000	0.00	0	1.55	42	0.00	0.5
10	Bill Singer B. Singer	0	1966	LAD	3	0	0		0	0.00	4	0	0	0	4.0	4	0	0	2	0	2	0	16	0	9.00	4.50	2.00	0.00	25.0	12.5	1.50	.400	0.00	0	2.05	65	9.00	0.5
11	Cecil Upshaw C. Upshaw	0	1966	ATL	1	0	0		0	0.00	2	0	0	0	3.0	0	0	0	3	0	0	0	11	1	6.00	9.00	0.67	0.00	18.2	27.3	1.00	.000	0.00	0	4.22	120	0.00	-0.2
12	Ron Willis R. Willis	0	1966	STL	4	0	0		0	0.00	2	0	0	1	3.0	1	0	0	1	0	1	1	11	0	6.00	3.00	2.00	0.00	18.2	9.1	0.67	.125	0.00	0	2.22	64	3.00	0.4
13	Ed Barnowski E. Barnowski	1	1966	BAL	2	0	0		0	3.00	2	0	0	0	3.0	4	1	0	1	0	1	0	13	0	6.00	3.00	2.00	0.00	15.4	7.7	1.67	.400	3.00	88	2.22	63	12.00	0.4
14	Danny Coombs D. Coombs	1	1966	HOU	2	0	0		0	3.38	3	0	0	0	2.2	4	1	0	0	0	1	0	12	0	10.13	0.00		0.00	25.0	0.0	1.50	.444	3.38	96	0.30	9	13.50	0.9
15	Grant Jackson G. Jackson	1	1966	PHI	2	0	0		0	5.40	0	0	0	0	1.2	2	1	0	3	0	0	0	9	0	0.00	16.20	0.00	0.00	0.0	33.3	3.00	.333	5.40	151	7.95	230	10.80	-0.8
16	Jim Ray J. Ray	1	1966	HOU	1	0	0		0		0	0	0	0	0.0	0	1	0	1	0	0	0	1	0			0.00		0.0	100.0
17	Nick Willhite N. Willhite	1	1966	LAD	6	0	0		0	2.08	4	0	0	0	4.1	3	1	0	5	0	3	0	19	1	8.31	10.38	0.80	0.00	21.1	26.3	1.85	.300	2.08	63	4.17	131	6.23	-0.5
18	Dom Zanni D. Zanni	1	1966	CIN	5	0	0		0	0.00	5	0	0	0	7.1	5	0	0	3	1	2	1	30	0	6.14	3.68	1.67	0.00	16.7	10.0	1.09	.238	1.23	0	2.83	76	6.14	0.7
19	Greg Bollo G. Bollo	2	1966	CWS	3	0	1	.000	1	2.57	4	0	0	0	7.0	7	2	0	3	1	1	0	30	0	5.14	3.86	1.33	0.00	13.3	10.0	1.43	.318	2.57	80	3.13	94	9.00	0.2
20	Joe Coleman J. Coleman	2	1966	WSH	1	1	0	1.000	1	2.00	4	1	0	0	9.0	6	2	0	2	0	0	0	35	0	4.00	2.00	2.00	0.00	11.4	5.7	0.89	.207	2.00	59	2.33	66	6.00	1.2
21	Pete Craig P. Craig	2	1966	WSH	1	0	0		0	4.50	1	0	0	0	2.0	2	1	0	1	0	0	1	10	0	4.50	4.50	1.00	0.00	10.0	10.0	1.50	.250	9.00	132	3.05	87	9.00	0.1
22	Dave Dowling D. Dowling	2	1966	CHC	1	1	0	1.000	1	2.00	3	1	0	0	9.0	10	2	0	0	0	0	0	37	0	3.00	0.00		0.00	8.1	0.0	1.11	.294	2.00	53	1.89	52	10.00	1.7
23	Chuck Hartenstein C. Hartenstein	2	1966	CHC	5	0	0		0	1.93	4	0	0	0	9.1	8	2	0	3	1	3	0	40	0	3.86	2.89	1.33	0.00	10.0	7.5	1.18	.250	1.93	51	2.98	81	7.71	0.7
24	John Hiller J. Hiller	2	1966	DET	1	0	0		0	9.00	1	0	0	0	2.0	2	2	0	2	0	1	0	10	0	4.50	9.00	0.50	0.00	10.0	20.0	2.00	.286	9.00	259	4.55	127	9.00	-0.2
25	Fred Norman F. Norman	2	1966	CHC	2	0	0		0	4.50	6	0	0	0	4.0	5	2	0	2	0	1	1	18	0	13.50	4.50	3.00	0.00	33.3	11.1	1.75	.500	4.50	119	1.05	29	11.25	1.1