Irv Young has the highest career average Game Score, with 89 per game.

Interpreted as:

highest career average game score by a player

	NAME	GSC	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	Irv Young I. Young	89	83	17	26	.395	46	0.07	170	20	7	2	404.0	390		193	5	104	10	21		1,641	5	3.79	2.32	1.63	0.11	10.4	6.3	1.22	.285	4.30	8.69
2	Don Fisher D. Fisher	86	2	1	0	1.000	1	2.00	4	1	1	0	18.0	12	4	4	1	7	2	1		74	0	2.00	3.50	0.57	0.50	5.4	9.5	1.06	.183	2.00	6.00
3	Luis Aloma L. Aloma	79	116	18	3	.857	1	3.45	116	1	1	15	235.0	212	90	98	21	111	4	55		1,003	6	4.44	4.25	1.05	0.80	11.6	11.1	1.37	.254	3.75	8.12
4	Tex Covington T. Covington	79	31	10	5	.667	15	0.00	49	7	1	0	147.0	153		76	2	64	13	7		632	7	3.00	3.92	0.77	0.12	7.8	10.1	1.48	.300	4.65	9.37
5	Darrin Winston D. Winston	78	34	4	2	.667	1	5.84	19	0	0	1	37.0	39	24	26	11	9	4	6	1	164	1	4.62	2.19	2.11	2.68	11.6	5.5	1.30	.231	6.32	9.49
6	Larry Anderson L. Anderson	78	16	2	3	.400	1	5.66	23	1	1	0	41.1	48	26	28	4	22	0	8	4	191	11	5.01	4.79	1.05	0.87	12.0	11.5	1.69	.310	6.10	10.45
7	Dave Jolly D. Jolly	77	159	16	14	.533	1	3.78	157	0	0	19	290.2	254	122	137	27	198	7	82	11	1,313	11	4.86	6.13	0.79	0.84	12.0	15.1	1.56	.246	4.24	7.86
8	Prince Oana P. Oana	77	13	3	2	.600	1	3.77	18	0	0	1	45.1	37	19	23	4	26	2	8		196	0	3.57	5.16	0.69	0.79	9.2	13.3	1.39	.226	4.57	7.35
9	Eddie O'Brien E. O'Brien	76	5	1	0	1.000	1	3.31	11	1	0	0	16.1	16	6	6	3	4	1	2		68	0	6.06	2.20	2.75	1.65	16.2	5.9	1.22	.265	3.31	8.82
10	Len Perme L. Perme	75	8	0	1	.000	1	3.12	6	1	0	0	17.1	11	6	6	0	11	1	5		74	0	3.12	5.71	0.55	0.00	8.1	14.9	1.27	.196	3.12	5.71
11	Pat Bohen P. Bohen	75	2	0	1	.000	1	3.00	5	1	0	0	9.0	5	3	3	0	4	1	1		35	1	5.00	4.00	1.25	0.00	14.3	11.4	1.00	.200	3.00	5.00
12	Big Jeff Pfeffer B. Jeff Pfeffer	74	43	8	5	.615	7	0.18	38	5	1	2	147.2	177		121	5	84	2	30			2	2.32	5.12	0.45	0.30		12.6	1.77	.320	7.37	10.79
13	Cy Young C. Young	74	110	54	45	.545	105	0.01	383	86	9	2	882.0	782		315	11	147	18	4		3,465	23	3.91	1.50	2.61	0.11	11.1	4.2	1.05	.265	3.21	7.98
14	Easton McGee E. McGee	73	2	0	0		1	0.00	3	0	0	0	9.2	5	0	1	0	1	0	1	0	36	0	2.79	0.93	3.00	0.00	8.3	2.8	0.62	.156	0.93	4.66
15	Chris Saenz C. Saenz	72	1	1	0	1.000	1	0.00	7	0	0	0	6.0	2	0	0	0	3	1	0	0	24	0	10.50	4.50	2.33	0.00	29.2	12.5	0.83	.154	0.00	3.00
16	Johnny Tillman J. Tillman	72	2	1	0	1.000	1	0.90	6	0	0	0	10.0	6	1	2	0	4	0	0		40	0	5.40	3.60	1.50	0.00	15.0	10.0	1.00	.200	1.80	5.40
17	Jack Pfiester J. Pfiester	71	82	36	23	.610	72	0.03	246	40	10	0	581.2	499		201	2	163	19	5		2,365	9	3.81	2.52	1.51	0.03	10.4	6.9	1.14	.257	3.11	7.72
18	Logan Henderson L. Henderson	70	1	1	0	1.000	1	1.50	9	0	0	0	6.0	3	1	1	1	1	0	0	0	21	0	13.50	1.50	9.00	1.50	42.9	4.8	0.67	.200	1.50	4.50
19	Tim Jones T. Jones	70	3	1	0	1.000	1	0.00	5	0	0	0	10.0	4	0	0	0	3	0	2	0	37	0	4.50	2.70	1.67	0.00	13.5	8.1	0.70	.138	0.00	3.60
20	Ed Karger E. Karger	69.7	95	26	29	.473	69	0.05	197	35	3	1	566.0	541		276	10	197	16	22			17	3.13	3.13	1.00	0.16		8.3	1.30	.273	4.39	8.60
21	Juan Pena J. Pena	69.5	2	2	0	1.000	2	0.69	15	0	0	0	13.0	9	1	1	0	3	0	0	0	49	0	10.38	2.08	5.00	0.00	30.6	6.1	0.92	.290	0.69	6.23
22	Noah Cameron N. Cameron	69	1	1	0	1.000	1	0.00	3	0	0	0	6.1	1	0	0	0	5	0	0	0	25	0	4.26	7.11	0.60	0.00	12.0	20.0	0.95	.059	0.00	1.42
23	Randy Hennis R. Hennis	69	3	0	0		1	0.00	4	0	0	0	9.2	1	0	0	0	3	1	1	0	34	0	3.72	2.79	1.33	0.00	11.8	8.8	0.41	.038	0.00	0.93
24	Pedro Dibut P. Dibut	69	8	3	0	1.000	2	2.70	15	2	0	0	36.2	27	11	11	1	12	0	5		146	0	3.68	2.95	1.25	0.25	10.3	8.2	1.06	.220	2.70	6.63
25	Tim McCabe T. McCabe	69	22	5	1	.833	4	2.90	26	4	1	0	71.1	60	23	38	2	21	3	7		292	2	3.28	2.65	1.24	0.25	8.9	7.2	1.14	.242	4.79	7.57