Bartolo Colon and LaTroy Hawkins were tied for the oldest in 2015. They were 42 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	Bartolo Colon B. Colon	42	2015	NYM	31	58	2	8	1	0	0	4	0	1	24	0	0	64	9	1	4	1	0	2	.138	.150	.155	.305	-2	-9.1	.136	-20	-9
2	LaTroy Hawkins L. Hawkins	42	2015	TOT	22	1	0	0	0	0	0	0	0	0	1	0	0	1	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.3	.000	-134	-0.3
3	Ichiro Suzuki I. Suzuki	41	2015	MIA	153	398	45	91	5	6	1	21	31	0	51	11	5	438	111	12	5	4	1	8	.229	.282	.279	.561	27	-22	.250	56	-22.3
4	Rafael Betancourt R. Betancourt	40	2015	COL
5	R.A. Dickey	40	2015	TOR	2	3	0	0	0	0	0	0	0	0	1	0	0	4	0	0	1	0	0	0	.000	.000	.000	.000	-1	-1	.000	-120	-1
6	Joe Nathan J. Nathan	40	2015	DET
7	Koji Uehara K. Uehara	40	2015	BOS
8	Scott Atchison S. Atchison	39	2015	CLE
9	Randy Choate R. Choate	39	2015	STL	66	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0	0	0		1.000			0	0.3	.687	356	0.3
10	Tim Hudson T. Hudson	39	2015	SFG	22	38	3	7	2	0	1	1	1	0	11	0	0	42	12	3	3	0	0	0	.184	.205	.316	.521	2	-2.9	.225	40	-2.9
11	Torii Hunter T. Hunter	39	2015	MIN	139	521	67	125	22	0	22	81	35	6	105	2	5	567	213	44	0	5	1	14	.240	.293	.409	.702	60	-4.2	.304	89	-7.3
12	David Ortiz D. Ortiz	39	2015	BOS	146	528	73	144	37	0	37	108	77	0	95	0	1	614	292	74	0	9	16	16	.273	.360	.553	.913	101	32.1	.379	138	27.3
13	Joel Peralta J. Peralta	39	2015	LAD	33	1	0	0	0	0	0	0	0	0	1	0	0	1	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.3	.000	-114	-0.2
14	Alex Rodriguez A. Rodriguez	39	2015	NYY	151	523	83	131	22	1	33	86	84	6	145	4	0	620	254	56	0	7	5	17	.250	.356	.486	.842	93	23.7	.361	129	20.9
15	Joe Beimel J. Beimel	38	2015	SEA
16	Carlos Beltran C. Beltran	38	2015	NYY	133	478	57	132	34	1	19	67	45	2	85	0	0	531	225	54	0	6	2	12	.276	.337	.471	.808	74	14.1	.346	119	11.7
17	A.J. Burnett	38	2015	PIT	24	42	1	5	0	0	1	5	0	0	20	0	0	52	8	1	9	1	0	1	.119	.116	.190	.307	-2	-7.6	.130	-27	-7.7
18	Bruce Chen B. Chen	38	2015	CLE
19	Jason Grilli J. Grilli	38	2015	ATL
20	Reed Johnson R. Johnson	38	2015	WSH	17	22	0	5	1	0	0	3	0	1	6	0	0	24	6	1	0	1	0	1	.227	.250	.273	.523	1	-1.6	.229	38	-1.7
21	A.J. Pierzynski	38	2015	ATL	113	407	38	122	24	1	9	49	19	7	37	0	2	436	175	34	0	3	2	19	.300	.339	.430	.769	56	6.9	.333	111	5.6
22	Fernando Rodney F. Rodney	38	2015	TOT
23	David Ross D. Ross	38	2015	CHC	72	159	6	28	9	0	1	9	20	0	61	1	0	182	40	10	2	1	7	1	.176	.267	.252	.518	7	-13.5	.221	33	-14.2
24	Matt Thornton M. Thornton	38	2015	WSH
25	Randy Wolf R. Wolf	38	2015	DET