Julio Franco was the oldest in 2004. He was 45 years old.

	NAME	AGE	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Julio Franco J. Franco	45	2004	ATL	125	320	37	99	18	3	6	57	36	1	68	4	2	361	141	27	1	3	4	10	.309	.378	.441	.818	52	7.7	.355	114	6.3
2	John Franco J. Franco	43	2004	NYM
3	Andres Galarraga A. Galarraga	43	2004	ANA	7	10	1	3	0	0	1	2	0	1	3	0	0	11	6	1	0	0	0	1	.300	.364	.600	.964	2	0.7	.409	152	0.7
4	Pat Borders P. Borders	41	2004	TOT	38	95	9	22	6	0	1	10	1	1	22	3	1	99	31	7	2	0	0	2	.232	.247	.326	.574	6	-6.7	.250	46	-6.8
5	Roger Clemens R. Clemens	41	2004	HOU	32	72	1	12	1	0	0	7	3	0	24	0	0	78	13	1	3	0	0	2	.167	.200	.181	.381	-1	-10.2	.175	-6	-10.7
6	Jeff Fassero J. Fassero	41	2004	TOT	37	21	3	4	0	0	0	1	1	0	9	0	0	24	4	0	2	0	0	0	.190	.227	.190	.418	0	-2.8	.194	-5	-3.2
7	Edgar Martinez E. Martinez	41	2004	SEA	141	486	45	128	23	0	12	63	58	2	107	1	0	549	187	35	0	3	10	15	.263	.342	.385	.727	62	-6.3	.317	92	-5.7
8	Jamie Moyer J. Moyer	41	2004	SEA	2	2	0	1	0	0	0	2	0	0	1	0	0	2	1	0	0	0	0	0	.500	.500	.500	1.000	0	0.2	.445	177	0.2
9	Terry Mulholland T. Mulholland	41	2004	MIN	4	2	0	0	0	0	0	0	0	0	0	0	0	2	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.6	.000	-122	-0.6
10	David Wells D. Wells	41	2004	SDP	29	57	2	6	0	0	0	3	3	1	24	0	0	69	6	0	8	0	0	1	.105	.164	.105	.269	-3	-11.4	.134	-25	-11.1
11	Randy Johnson R. Johnson	40	2004	ARI	33	80	1	10	3	0	0	6	4	0	37	0	0	87	13	3	3	0	0	1	.125	.167	.163	.329	-2	-13.1	.152	-26	-14.2
12	Barry Larkin B. Larkin	40	2004	CIN	111	346	55	100	15	3	8	44	34	1	39	2	0	386	145	26	2	3	1	16	.289	.352	.419	.771	50	2.3	.337	100	-0.1
13	Fred McGriff F. McGriff	40	2004	TBD	27	72	7	13	3	0	2	7	9	0	19	0	0	81	22	5	0	0	2	1	.181	.272	.306	.577	5	-5.5	.250	45	-5.7
14	Barry Bonds B. Bonds	39	2004	SFG	147	373	129	135	27	3	45	101	232	9	41	6	1	617	303	75	0	3	120	5	.362	.609	.812	1.422	185	108	.537	233	105.7
15	Kevin Brown K. Brown	39	2004	NYY
16	Ellis Burks E. Burks	39	2004	BOS	11	33	6	6	0	0	1	1	3	1	8	2	0	37	9	1	0	0	0	1	.182	.270	.273	.543	2	-2.5	.251	43	-2.7
17	Mike Fetters M. Fetters	39	2004	ARI
18	Steve Finley S. Finley	39	2004	TOT	162	628	92	170	28	1	36	94	61	1	82	9	7	706	308	65	9	7	1	14	.271	.333	.490	.823	100	12.6	.351	108	6.9
19	Lenny Harris L. Harris	39	2004	FLA	79	95	7	20	5	0	1	17	3	0	8	0	0	99	28	6	0	1	0	2	.211	.232	.295	.527	4	-8.4	.230	34	-8.4
20	Roberto Hernandez R. Hernandez	39	2004	PHI
21	Michael Jackson M. Jackson	39	2004	CWS
22	Mark McLemore M. McLemore	39	2004	OAK	77	250	29	62	14	0	2	21	41	1	33	0	2	295	82	16	2	1	3	4	.248	.355	.328	.683	32	-5	.310	85	-5.7
23	Rafael Palmeiro R. Palmeiro	39	2004	BAL	154	550	68	142	29	0	23	88	86	6	61	2	1	651	240	52	0	9	15	15	.258	.359	.436	.796	86	5.6	.340	106	4.8
24	Steve Reed S. Reed	39	2004	COL	61	2	0	1	0	0	0	0	0	0	1	0	0	2	1	0	0	0	0	0	.500	.500	.500	1.000	0	0.2	.445	160	0.2
25	Kenny Rogers K. Rogers	39	2004	TEX	2	5	1	0	0	0	0	0	0	0	3	0	0	5	0	0	0	0	0	1	.000	.000	.000	.000	-1	-1.4	.000	-129	-1.5