Josh Beckett had the highest Game Score in a 2003 postseason game, with a Game Score of 93 versus the Cubs on October 12, 2003.

Interpreted as:

most game score by a player in a playoff game 2003

	NAME	GSC	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Josh Beckett J. Beckett	93	10/12/2003	FLA	vs	CHC	W	1	0.00	11	1	1	0	9.0	2	0	0	0	1	0	0	0	30	0
2	Jason Schmidt J. Schmidt	86	9/30/2003	SFG	vs	FLA	W	1	0.00	5	1	1	0	9.0	3	0	0	0	0	0	0	0	31	0
3	Josh Beckett J. Beckett	84	10/25/2003	FLA	@	NYY	W	1	0.00	9	1	1	0	9.0	5	0	0	0	2	0	0	0	32	0
4	Mark Prior M. Prior	82	10/3/2003	CHC	vs	ATL	W	1	1.00	7	1	0	0	9.0	2	1	1	0	4	1	0	0	34	1
5	Andy Pettitte A. Pettitte	76	10/19/2003	NYY	vs	FLA	W	1	0.00	7	0	0	0	8.2	6	0	1	0	1	0	0	0	32	0
6	Ted Lilly T. Lilly	74	10/4/2003	OAK	@	BOS		1	0.00	5	0	0	0	7.0	2	0	1	0	2	1	0	0	28	0
7	Kerry Wood K. Wood	73	10/5/2003	CHC	@	ATL	W	1	1.13	7	0	0	0	8.0	5	1	1	0	2	0	0	0	30	0
8	Josh Beckett J. Beckett	73	9/30/2003	FLA	@	SFG	L	1	1.29	9	0	0	0	7.0	2	1	1	0	5	0	0	1	28	1
9	Andy Pettitte A. Pettitte	72	10/2/2003	NYY	vs	MIN	W	1	1.29	10	0	0	0	7.0	4	1	1	1	3	0	0	0	29	1
10	Kerry Wood K. Wood	72	9/30/2003	CHC	@	ATL	W	1	2.45	11	0	0	0	7.1	2	2	2	1	5	0	0	0	30	1
11	Josh Beckett J. Beckett	71	10/21/2003	FLA	vs	NYY	L	1	2.45	10	0	0	0	7.1	3	2	2	0	3	1	0	0	29	0
12	Barry Zito B. Zito	70	10/2/2003	OAK	vs	BOS	W	1	1.29	9	0	0	0	7.0	5	1	1	0	2	0	0	0	28	0
13	Carl Pavano C. Pavano	68	10/22/2003	FLA	vs	NYY		1	1.13	4	0	0	0	8.0	7	1	1	0	0	0	0	0	29	0
14	David Wells D. Wells	68	10/14/2003	NYY	@	BOS	W	1	1.29	5	0	0	0	7.0	4	1	1	1	2	1	0	0	28	0
15	Roger Clemens R. Clemens	68	10/4/2003	NYY	@	MIN	W	1	1.29	6	0	0	0	7.0	5	1	1	1	1	0	0	0	27	0
16	Mike Mussina M. Mussina	67	10/21/2003	NYY	@	FLA	W	1	1.29	9	0	0	0	7.0	7	1	1	0	1	0	0	1	29	0
17	Tim Wakefield T. Wakefield	67	10/13/2003	BOS	vs	NYY	W	1	1.29	8	0	0	0	7.0	5	1	1	0	4	1	0	0	30	0
18	David Wells D. Wells	64	10/5/2003	NYY	@	MIN	W	1	1.17	5	0	0	0	7.2	8	1	1	0	0	0	0	0	31	0
19	Andy Pettitte A. Pettitte	63	10/25/2003	NYY	vs	FLA	L	1	1.29	7	0	0	0	7.0	6	1	2	0	3	0	0	1	31	0
20	Derek Lowe D. Lowe	63	10/4/2003	BOS	vs	OAK		1	0.00	2	0	0	0	7.0	6	0	1	0	2	0	0	1	29	0
21	Roger Clemens R. Clemens	60	10/11/2003	NYY	@	BOS	W	1	3.00	7	0	0	0	6.0	5	2	2	0	1	0	0	0	22	0
22	Tim Wakefield T. Wakefield	60	10/8/2003	BOS	@	NYY	W	1	3.00	2	0	0	0	6.0	2	2	2	0	2	0	0	0	22	0
23	Mike Hampton M. Hampton	60	10/1/2003	ATL	vs	CHC		1	3.00	9	0	0	0	6.0	4	2	2	0	5	0	0	0	27	0
24	Mike Mussina M. Mussina	58	10/13/2003	NYY	@	BOS	L	1	4.05	10	0	0	0	6.2	6	3	3	2	2	0	0	1	27	0
25	Matt Clement M. Clement	58	10/11/2003	CHC	@	FLA	W	1	3.52	3	0	0	0	7.2	5	3	3	0	2	1	0	0	29	0