Mike Lowell launched the most homers by a third baseman in 2003, with 32 homers.

	NAME	HR	SEASON	TM	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Mike Lowell M. Lowell	32	2003	FLA	130	492	76	136	27	1	105	56	3	78	3	1	557	261	60	0	6	6	14	.276	.350	.530	.881	89	20.2	.371	128	19.8
2	Hank Blalock H. Blalock	29	2003	TEX	143	567	89	170	33	3	90	44	1	97	2	3	615	296	65	0	3	1	16	.300	.350	.522	.872	98	22.9	.372	122	16.8
3	Eric Chavez E. Chavez	29	2003	OAK	156	588	94	166	39	5	101	62	1	89	8	3	654	302	73	0	3	10	14	.282	.350	.514	.864	100	20.2	.365	124	19.4
4	Scott Rolen S. Rolen	28	2003	STL	154	559	98	160	49	1	104	82	9	104	13	3	657	295	78	0	7	5	19	.286	.382	.528	.910	114	33	.388	137	30.9
5	Aramis Ramirez A. Ramirez	27	2003	TOT	159	607	75	165	32	2	106	42	10	99	2	2	670	282	61	0	11	3	21	.272	.324	.465	.788	87	5.1	.337	101	1.2
6	Tony Batista T. Batista	26	2003	BAL	161	631	76	148	20	1	99	28	5	102	4	3	670	248	47	0	6	4	20	.235	.270	.393	.663	58	-24.6	.284	72	-23.8
7	Morgan Ensberg M. Ensberg	25	2003	HOU	127	385	69	112	15	1	60	48	6	60	7	2	441	204	41	1	1	1	10	.291	.377	.530	.907	77	22.9	.390	134	19.3
8	Aaron Boone A. Boone	24	2003	TOT	160	592	92	158	32	3	96	46	8	104	23	3	654	268	59	6	2	2	13	.267	.327	.453	.780	85	5.2	.337	102	1.8
9	Adrian Beltre A. Beltre	23	2003	LAD	158	559	50	134	30	2	80	37	5	103	2	2	608	237	55	1	6	4	13	.240	.290	.424	.714	63	-11.5	.305	86	-10.6
10	Wes Helms W. Helms	23	2003	MIL	134	476	56	124	21	0	67	43	10	131	0	1	536	214	44	0	7	3	10	.261	.330	.450	.780	69	3.7	.336	101	0.6
11	Vinny Castilla V. Castilla	22	2003	ATL	147	542	65	150	28	3	76	26	3	86	1	2	578	250	53	1	6	3	22	.277	.310	.461	.771	71	0.3	.329	96	-3
12	Joe Crede J. Crede	19	2003	CWS	151	536	68	140	31	2	75	32	6	75	1	1	580	232	52	2	4	1	11	.261	.308	.433	.741	67	-3.8	.320	91	-6.7
13	Bill Mueller B. Mueller	19	2003	BOS	146	524	85	171	45	5	85	59	7	77	1	4	600	283	69	4	6	2	11	.326	.398	.540	.938	110	36.9	.401	145	33.9
14	Eric Munson E. Munson	18	2003	DET	99	313	28	75	9	0	50	35	1	61	3	0	357	138	27	1	7	1	4	.240	.312	.441	.753	42	-1.4	.323	98	-1
15	Casey Blake C. Blake	17	2003	CLE	152	557	80	143	35	0	67	38	10	109	7	9	621	229	52	8	8	1	11	.257	.312	.411	.723	69	-7.1	.314	91	-7.1
16	Pedro Feliz P. Feliz	16	2003	SFG	95	235	31	58	9	3	48	10	1	53	2	2	249	121	28	1	2	0	7	.247	.278	.515	.793	32	1	.333	102	0.5
17	Troy Glaus T. Glaus	16	2003	ANA	91	319	53	79	17	2	50	46	1	73	7	2	367	148	35	0	1	4	8	.248	.343	.464	.807	51	5.9	.347	113	5.9
18	Joe Randa J. Randa	16	2003	KCR	131	502	80	146	31	1	72	41	7	61	1	0	566	227	48	9	7	0	12	.291	.348	.452	.800	79	9.5	.348	106	4.6
19	Corey Koskie C. Koskie	14	2003	MIN	131	469	76	137	29	2	69	77	7	113	11	5	562	212	45	0	9	5	5	.292	.393	.452	.845	88	19.2	.369	124	17.1
20	Robin Ventura R. Ventura	14	2003	TOT	138	392	42	95	18	1	55	58	0	87	0	0	453	157	33	3	0	4	11	.242	.340	.401	.741	55	-0.7	.326	98	-0.9
21	Edgardo Alfonzo E. Alfonzo	13	2003	SFG	142	514	56	133	25	2	81	58	4	41	5	2	586	201	40	3	7	4	14	.259	.334	.391	.726	67	-4.7	.318	92	-5.8
22	Shane Halter S. Halter	12	2003	DET	114	360	33	78	5	2	30	27	0	77	2	3	393	123	19	3	3	0	11	.217	.269	.342	.611	29	-19.3	.269	62	-18.8
23	Eric Hinske E. Hinske	12	2003	TOR	124	449	74	109	45	3	63	59	1	104	12	2	514	196	60	0	5	1	11	.243	.329	.437	.765	65	1.8	.332	98	-1.4
24	Chris Stynes C. Stynes	11	2003	COL	138	443	71	113	31	3	73	48	6	76	3	1	502	183	45	3	2	1	8	.255	.335	.413	.748	62	0.3	.329	82	-11.8
25	Ty Wigginton T. Wigginton	11	2003	NYM	156	573	73	146	36	6	71	46	9	124	12	2	633	227	53	1	4	2	15	.255	.318	.396	.714	70	-8	.313	89	-9.3