Andy Pettitte had the most games pitched in the postseason when his Game Score was 30+, with 37 games.

Interpreted as:

most games by a player with 30 or more game score playoffs

	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	H/9
1	Andy Pettitte A. Pettitte	37	19	7	.731	37	2.75	171	0	0	0	252.1	227	77	81	23	66	3	0	3	1,020	3	6.10	2.35	2.59	0.82	16.8	6.5	1.16	.269	2.89	8.10
2	Justin Verlander J. Verlander	36	16	12	.571	36	3.41	241	2	1	0	219.1	168	83	86	30	71	5	0	0	889	8	9.89	2.91	3.39	1.23	27.1	8.0	1.09	.255	3.53	6.89
3	Roger Clemens R. Clemens	33	11	7	.611	33	3.62	167	1	1	0	194.0	166	78	82	16	68	6	0	1	811	10	7.75	3.15	2.46	0.74	20.6	8.4	1.21	.271	3.80	7.70
4	Tom Glavine T. Glavine	30	14	11	.560	30	2.05	133	3	0	0	201.2	152	46	56	16	72	4	0	5	804	3	5.94	3.21	1.85	0.71	16.5	9.0	1.11	.235	2.50	6.78
5	Clayton Kershaw C. Kershaw	29	13	10	.565	29	3.81	194	0	0	0	177.0	137	75	79	25	41	3	0	2	696	8	9.86	2.08	4.73	1.27	27.9	5.9	1.01	.259	4.02	6.97
6	John Smoltz J. Smoltz	27	13	4	.765	27	2.55	177	2	1	0	187.1	151	53	58	14	63	3	0	6	770	6	8.50	3.03	2.81	0.67	23.0	8.2	1.14	.267	2.79	7.25
7	Greg Maddux G. Maddux	27	11	11	.500	27	2.72	114	2	0	0	182.0	166	55	74	11	44	7	0	12	746	4	5.64	2.18	2.59	0.54	15.3	5.9	1.15	.272	3.66	8.21
8	Max Scherzer M. Scherzer	23	6	5	.545	23	2.98	156	0	0	0	129.2	89	43	44	16	49	8	0	2	523	8	10.83	3.40	3.18	1.11	29.8	9.4	1.06	.248	3.05	6.18
9	John Lackey J. Lackey	23	8	6	.571	23	3.29	107	0	0	0	134.0	125	49	52	6	43	4	0	5	558	6	7.19	2.89	2.49	0.40	19.2	7.7	1.25	.299	3.49	8.40
10	Gerrit Cole G. Cole	22	11	6	.647	22	2.77	156	0	0	0	133.1	100	41	50	19	36	3	0	1	537	1	10.53	2.43	4.33	1.28	29.1	6.7	1.02	.251	3.38	6.75
11	Jon Lester J. Lester	22	9	7	.563	22	2.44	121	0	0	0	143.2	110	39	41	14	37	3	0	0	570	3	7.58	2.32	3.27	0.88	21.2	6.5	1.02	.243	2.57	6.89
12	Zack Greinke Z. Greinke	21	4	6	.400	21	4.18	99	0	0	0	112.0	101	52	55	19	33	3	0	0	463	2	7.96	2.65	3.00	1.53	21.4	7.1	1.20	.265	4.42	8.12
13	CC Sabathia	20	10	5	.667	20	3.34	108	1	0	0	116.0	111	43	47	12	50	6	0	7	503	4	8.38	3.88	2.16	0.93	21.5	9.9	1.39	.303	3.65	8.61
14	Mike Mussina M. Mussina	20	7	7	.500	20	3.20	136	0	0	0	129.1	109	46	49	18	28	3	0	6	525	2	9.46	1.95	4.86	1.25	25.9	5.3	1.06	.268	3.41	7.59
15	Whitey Ford W. Ford	20	10	6	.625	20	2.21	90	7	3	0	138.1	117	34	41	6	33	3	0	2	556	4	5.86	2.15	2.73	0.39	16.2	5.9	1.08	.262	2.67	7.61
16	Chris Carpenter C. Carpenter	18	10	4	.714	18	3.00	68	1	1	0	108.0	104	36	43	11	36	6	0	2	461	1	5.67	3.00	1.89	0.92	14.8	7.8	1.30	.274	3.58	8.67
17	Dave Stewart D. Stewart	18	10	4	.714	18	2.62	71	3	1	0	130.2	94	38	42	12	46	4	0	0	526	4	4.89	3.17	1.54	0.83	13.5	8.7	1.07	.209	2.89	6.47
18	Walker Buehler W. Buehler	17	4	3	.571	17	2.64	112	0	0	0	88.2	66	26	28	8	35	2	0	1	361	2	11.37	3.55	3.20	0.81	31.0	9.7	1.14	.284	2.84	6.70
19	Curt Schilling C. Schilling	17	11	1	.917	17	1.58	116	4	2	0	125.2	89	22	26	10	23	3	0	0	486	1	8.31	1.65	5.04	0.72	23.9	4.7	0.89	.237	1.86	6.37
20	Charlie Morton C. Morton	16	6	4	.600	16	2.99	85	0	0	0	72.1	59	24	26	7	30	6	0	0	309	5	10.58	3.73	2.83	0.87	27.5	9.7	1.23	.287	3.24	7.34
21	David Wells D. Wells	16	10	4	.714	16	2.78	70	1	0	0	106.2	98	33	37	10	19	7	0	1	430	1	5.91	1.60	3.68	0.84	16.3	4.4	1.10	.272	3.12	8.27
22	David Cone D. Cone	16	8	2	.800	16	3.13	89	1	0	0	103.2	81	36	41	11	54	0	0	0	439	5	7.73	4.69	1.65	0.95	20.3	12.3	1.30	.246	3.56	7.03
23	Orel Hershiser O. Hershiser	16	8	1	.889	16	1.93	86	4	2	0	116.1	87	25	30	5	34	5	0	3	462	6	6.65	2.63	2.53	0.39	18.6	7.4	1.04	.247	2.32	6.73
24	Catfish Hunter C. Hunter	16	8	3	.727	16	2.38	62	4	1	0	117.1	94	31	32	15	33	1	0	6	469	1	4.76	2.53	1.88	1.15	13.2	7.0	1.08	.221	2.45	7.21
25	Cole Hamels C. Hamels	15	7	5	.583	15	3.03	91	1	1	0	95.0	75	32	38	11	23	2	0	2	381	0	8.62	2.18	3.96	1.04	23.9	6.0	1.03	.252	3.60	7.11