Alex Cintron had the best OPS by a rookie with >124 at-bats in 2003, with an OPS of .848.

	NAME	OPS	AB	SEASON	TM	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	WRC	WRAA	WOBA	WRC+	BRAA
1	Alex Cintron A. Cintron	.848	448	2003	ARI	117	70	142	26	6	13	51	29	2	33	2	3	487	219	45	5	3	0	7	.317	.359	.489	75	15.5	.366	116	9.7
2	Jody Gerut J. Gerut	.830	480	2003	CLE	127	66	134	33	2	22	75	35	7	70	4	5	525	237	57	1	2	4	13	.279	.336	.494	76	11.5	.354	117	11.4
3	Scott Podsednik S. Podsednik	.822	558	2003	MIL	154	100	175	29	8	9	58	56	4	91	43	10	628	247	46	8	2	2	11	.314	.379	.443	94	17.2	.361	117	13.6
4	Robby Hammock R. Hammock	.820	195	2003	ARI	65	30	55	10	2	8	28	17	2	44	3	2	216	93	20	0	2	3	5	.282	.343	.477	30	3.7	.348	104	1.1
5	Jason Phillips J. Phillips	.815	403	2003	NYM	119	45	120	25	0	11	58	39	10	50	0	1	453	178	36	0	1	3	21	.298	.373	.442	67	11.2	.357	118	10.3
6	Travis Hafner T. Hafner	.812	291	2003	CLE	91	35	74	19	3	14	40	22	10	81	2	1	324	141	36	0	1	2	7	.254	.327	.485	45	5.3	.347	113	5.2
7	Mark Teixeira M. Teixeira	.811	529	2003	TEX	146	66	137	29	5	26	84	44	14	120	1	2	589	254	60	0	2	5	14	.259	.331	.480	82	9.4	.347	105	3.5
8	Miguel Cabrera M. Cabrera	.793	314	2003	FLA	87	39	84	21	3	12	62	25	2	84	0	2	346	147	36	4	1	3	12	.268	.325	.468	45	3.1	.338	106	2.8
9	Angel Berroa A. Berroa	.789	567	2003	KCR	158	92	163	28	7	17	73	29	18	100	21	5	635	256	52	13	8	3	13	.287	.338	.451	84	6.5	.340	101	1
10	Hideki Matsui H. Matsui	.788	623	2003	NYY	163	82	179	42	1	16	106	63	3	86	2	2	695	271	59	0	6	5	25	.287	.353	.435	94	8.4	.342	109	7.5
11	Marlon Byrd M. Byrd	.784	495	2003	PHI	135	86	150	28	4	7	45	44	7	94	11	1	553	207	39	4	3	3	8	.303	.366	.418	76	7.9	.345	109	6.1
12	Reed Johnson R. Johnson	.780	412	2003	TOR	114	79	121	21	2	10	52	20	20	67	5	3	457	176	33	1	4	1	10	.294	.353	.427	62	5.7	.343	105	2.8
13	Keith Ginter K. Ginter	.779	358	2003	MIL	127	51	92	15	2	14	44	37	17	87	1	1	415	153	31	0	3	1	8	.257	.352	.427	56	5.4	.343	106	3
14	Ryan Freel R. Freel	.775	137	2003	CIN	43	23	39	6	1	4	12	9	4	13	9	4	153	59	11	2	1	1	2	.285	.344	.431	20	1.2	.337	101	0.2
15	Juan Rivera J. Rivera	.773	173	2003	NYY	57	22	46	14	0	7	26	10	0	27	0	0	185	81	21	1	1	1	8	.266	.304	.468	23	0.1	.329	99	-0.1
16	Hee-Seop Choi H. Choi	.771	202	2003	CHC	80	31	44	17	0	8	28	37	4	71	1	1	245	85	25	2	0	1	2	.218	.350	.421	33	2.7	.341	104	1.3
17	Jose Reyes J. Reyes	.769	274	2003	NYM	69	47	84	12	4	5	32	13	0	36	13	3	292	119	21	2	3	0	1	.307	.334	.434	37	1.3	.333	102	0.7
18	Lyle Overbay L. Overbay	.767	254	2003	ARI	86	23	70	20	0	4	28	35	2	67	1	0	293	102	24	0	2	7	8	.276	.365	.402	37	1.3	.333	94	-2.2
19	Bill Hall B. Hall	.756	142	2003	MIL	52	23	37	9	2	5	20	7	1	28	1	2	155	65	16	4	1	0	5	.261	.298	.458	18	-0.6	.323	92	-1.5
20	Ben Broussard B. Broussard	.755	386	2003	CLE	116	53	96	21	3	16	55	32	5	75	5	2	429	171	40	3	3	2	6	.249	.312	.443	52	-1.1	.325	98	-1.1
21	Eric Munson E. Munson	.753	313	2003	DET	99	28	75	9	0	18	50	35	1	61	3	0	357	138	27	1	7	1	4	.240	.312	.441	42	-1.4	.323	98	-1
22	Rocco Baldelli R. Baldelli	.742	637	2003	TBD	156	89	184	32	8	11	78	30	8	128	27	10	684	265	51	3	6	4	10	.289	.326	.416	80	-3.9	.321	94	-4.8
23	Ryan Ludwick R. Ludwick	.737	162	2003	TOT	47	17	40	8	1	7	26	12	0	48	2	0	175	71	16	1	0	1	1	.247	.299	.438	20	-1.7	.316	91	-2
24	Craig Monroe C. Monroe	.736	425	2003	DET	128	51	102	18	1	23	70	27	2	89	4	2	458	191	42	1	3	2	10	.240	.287	.449	51	-5.5	.313	91	-5
25	Matt Kata M. Kata	.736	288	2003	ARI	78	42	74	16	5	7	29	25	1	53	3	2	322	121	28	5	3	0	4	.257	.315	.420	37	-2.3	.319	85	-6.1