what pitcher had the most shutouts from 1955 to 1971

Between the 1955 and 1971 seasons, Juan Marichal and Bob Gibson were tied for the most shutouts, with 50 shutouts.

Interpreted as:

What pitcher had the most regular-season shutouts from 1955 to 1971?

	NAME	SHO	G	W	L	W%	GS	ERA	SO	CG	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	Juan Marichal J. Marichal	50	399	221	109	.670	390	2.73	2,122	229	2	3071.1	2,674	930	1,102	278	607	34	8	66	12,371	47	6.22	1.78	3.50	0.81	17.2	4.9	1.07	.257	3.23	77	2.95	86	7.84	155.8
2	Bob Gibson B. Gibson	50	414	206	130	.613	376	2.82	2,578	209	4	3062.1	2,538	959	1,089	197	1,025	87	17	81	12,619	84	7.58	3.01	2.52	0.58	20.4	8.1	1.16	.268	3.20	75	2.77	77	7.46	277.8
3	Don Drysdale D. Drysdale	49	518	209	166	.557	465	2.95	2,486	167	6	3432.0	3,084	1,124	1,292	280	855	154	34	123	14,097	82	6.52	2.24	2.91	0.73	17.6	6.1	1.15	.272	3.39	83	3.02	88	8.09	162.2
4	Jim Bunning J. Bunning	40	591	224	184	.549	519	3.27	2,855	151	16	3760.1	3,433	1,366	1,527	372	1,000	160	39	98	15,618	47	6.83	2.39	2.86	0.89	18.3	6.4	1.18	.273	3.65	88	3.22	88	8.22	195.2
5	Sandy Koufax S. Koufax	40	397	165	87	.655	314	2.76	2,396	137	9	2324.1	1,754	713	806	204	817	18	44	48	9,497	87	9.28	3.16	2.93	0.79	25.2	8.6	1.11	.256	3.12	75	2.69	75	6.79	226.6
6	Milt Pappas M. Pappas	39	461	185	145	.561	408	3.39	1,600	118	4	2829.0	2,667	1,066	1,177	260	789	60	32	77	11,712	90	5.09	2.51	2.03	0.83	13.7	6.7	1.22	.267	3.74	93	3.49	96	8.48	50.9
7	Whitey Ford W. Ford	37	412	193	91	.680	368	2.72	1,662	127	9	2640.2	2,322	797	919	198	823	21	24	44	10,816	68	5.66	2.80	2.02	0.67	15.4	7.6	1.19	.262	3.13	75	3.18	86	7.91	150.9
8	Larry Jackson L. Jackson	37	558	194	183	.515	429	3.40	1,709	149	20	3262.2	3,206	1,233	1,405	259	824	68	73	106	13,593	56	4.71	2.27	2.07	0.71	12.6	6.1	1.24	.275	3.88	90	3.32	90	8.84	139.8
9	Camilo Pascual C. Pascual	36	481	170	163	.511	400	3.61	2,107	131	7	2811.1	2,577	1,127	1,269	249	1,008	55	40	51	11,876	82	6.75	3.23	2.09	0.80	17.7	8.5	1.28	.275	4.06	96	3.30	87	8.25	162.6
10	Dean Chance D. Chance	33	406	128	115	.527	294	2.92	1,534	83	23	2147.1	1,864	697	832	122	739	65	61	75	8,906	70	6.43	3.10	2.08	0.51	17.2	8.3	1.21	.270	3.49	85	2.96	83	7.81	140.2
11	Bob Friend B. Friend	32	466	169	180	.484	408	3.35	1,479	142	8	2935.1	3,016	1,092	1,253	225	627	39	37	115	12,223	39	4.53	1.92	2.36	0.69	12.1	5.1	1.24	.283	3.84	90	3.17	86	9.25	167.1
12	Claude Osteen C. Osteen	31	407	144	146	.497	362	3.25	1,312	102	1	2606.2	2,591	940	1,065	188	660	35	21	79	10,814	50	4.53	2.28	1.99	0.65	12.1	6.1	1.25	.279	3.68	96	3.26	98	8.95	11.3
13	Jim Maloney J. Maloney	30	302	134	84	.615	262	3.19	1,605	74	4	1849.0	1,518	655	729	138	810	36	18	39	7,745	124	7.81	3.94	1.98	0.67	20.7	10.5	1.26	.268	3.55	87	3.13	88	7.39	84.2
14	Warren Spahn W. Spahn	30	414	197	135	.593	363	3.20	1,299	193	14	2810.2	2,671	1,000	1,103	268	691	26	40	60	11,532	38	4.16	2.21	1.88	0.86	11.3	6.0	1.20	.260	3.53	90	3.58	102	8.55	-23.4
15	Mel Stottlemyre M. Stottlemyre	29	270	128	98	.566	267	2.89	1,012	118	1	2015.1	1,807	647	738	138	608	31	2	56	8,277	43	4.52	2.72	1.66	0.62	12.2	7.3	1.20	.257	3.30	88	3.35	98	8.07	15.2
16	Denny McLain D. McLain	29	260	127	84	.602	251	3.27	1,253	103	1	1809.2	1,554	657	720	226	522	25	3	24	7,374	26	6.23	2.60	2.40	1.12	17.0	7.1	1.15	.248	3.58	95	3.65	102	7.73	-16.6
17	Mickey Lolich M. Lolich	28	352	141	107	.569	303	3.41	1,874	104	9	2177.0	1,926	824	898	208	719	72	25	32	9,094	74	7.75	2.97	2.61	0.86	20.6	7.9	1.21	.276	3.71	97	3.13	85	7.96	129.8
18	Lew Burdette L. Burdette	28	492	167	114	.594	319	3.77	889	134	16	2511.2	2,638	1,051	1,177	257	458	44	79	63	10,422	18	3.19	1.64	1.94	0.92	8.5	4.4	1.23	.271	4.22	105	3.72	105	9.45	-53.7
19	Early Wynn E. Wynn	27	287	116	94	.552	255	3.50	1,164	101	7	1836.2	1,655	714	791	165	728	36	22	36	7,760	20	5.70	3.57	1.60	0.81	15.0	9.4	1.30	.263	3.88	91	3.63	94	8.11	50.7
20	Vern Law V. Law	26	389	140	116	.547	315	3.54	937	105	8	2268.1	2,386	892	1,016	228	441	27	46	74	9,442	29	3.72	1.75	2.12	0.90	9.9	4.7	1.25	.276	4.03	95	3.60	98	9.47	15
21	Jim Perry J. Perry	25	501	167	123	.576	325	3.37	1,310	87	10	2507.2	2,362	940	1,047	246	775	56	62	67	10,459	45	4.70	2.78	1.69	0.88	12.5	7.4	1.25	.262	3.76	92	3.76	99	8.48	9.4
22	Dick Donovan D. Donovan	25	318	122	95	.562	266	3.55	859	101	4	1955.0	1,916	772	853	192	433	41	18	49	8,089	17	3.95	1.99	1.98	0.88	10.6	5.4	1.20	.263	3.93	94	3.62	94	8.82	48.1
23	Chris Short C. Short	24	440	131	126	.510	301	3.37	1,565	88	15	2230.0	2,105	835	937	175	754	59	61	65	9,365	69	6.32	3.04	2.08	0.71	16.7	8.1	1.28	.283	3.78	95	3.24	95	8.50	44.3
24	Gary Peters G. Peters	23	326	121	100	.548	282	3.20	1,353	79	4	1995.2	1,803	710	799	147	668	59	18	45	8,329	82	6.10	3.01	2.03	0.66	16.2	8.0	1.24	.271	3.60	92	3.22	90	8.13	77.9
25	Mike McCormick M. McCormick	23	484	134	128	.511	333	3.73	1,321	91	12	2380.1	2,281	986	1,100	256	795	24	69	101	10,058	75	4.99	3.01	1.66	0.97	13.1	7.9	1.29	.264	4.16	104	3.84	109	8.62	-84.3