Justin Verlander was the oldest active player in 2015. He was 32 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	Justin Verlander J. Verlander	32	2015	DET
2	Charlie Morton C. Morton	31	2015	PIT	21	36	0	1	0	0	0	1	1	0	18	0	0	43	1	0	6	0	0	0	.028	.054	.028	.082	-4	-9.3	.042	-87	-9.4
3	Max Scherzer M. Scherzer	30	2015	WSH	32	69	4	15	0	0	0	0	2	0	23	0	0	77	15	0	6	0	0	0	.217	.239	.217	.457	2	-6.6	.205	22	-7
4	Justin Turner J. Turner	30	2015	LAD	126	385	55	113	26	1	16	60	36	13	71	5	2	439	189	43	1	4	1	10	.294	.370	.491	.861	70	20.4	.371	140	20.6
5	Chris Martin C. Martin	29	2015	NYY
6	Carlos Santana C. Santana	29	2015	CLE	154	550	72	127	29	2	19	85	108	3	122	11	3	666	217	50	0	5	8	20	.231	.357	.395	.752	84	9.2	.331	107	5.6
7	Martín Maldonado M. Maldonado	28	2015	MIL	79	229	19	48	7	0	4	22	23	1	65	0	1	256	67	11	1	2	3	6	.210	.282	.293	.575	17	-12	.254	54	-13.7
8	Andrew McCutchen A. McCutchen	28	2015	PIT	157	566	91	165	36	3	23	96	98	12	133	11	5	685	276	62	0	9	12	9	.292	.401	.488	.889	114	36.7	.380	144	35.5
9	Wade Miley W. Miley	28	2015	BOS	1	2	0	0	0	0	0	0	0	0	0	0	0	2	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.5	.000	-123	-0.5
10	Caleb Thielbar C. Thielbar	28	2015	MIN
11	Kirby Yates K. Yates	28	2015	TBR
12	Aroldis Chapman A. Chapman	27	2015	CIN	62	1	1	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.3	.000	-119	-0.3
13	Jacob deGrom J. deGrom	27	2015	NYM	28	59	3	11	1	0	0	4	3	0	16	0	0	66	12	1	4	0	0	4	.186	.226	.203	.429	1	-6.2	.196	21	-6.1
14	Paul Goldschmidt P. Goldschmidt	27	2015	ARI	159	567	103	182	38	2	33	110	118	2	151	21	5	694	323	73	0	7	29	16	.321	.435	.570	1.005	136	57.9	.418	163	51.1
15	Kenley Jansen K. Jansen	27	2015	LAD
16	Clayton Kershaw C. Kershaw	27	2015	LAD	31	71	2	9	2	0	0	2	2	1	23	0	0	79	11	2	5	0	0	2	.127	.162	.155	.317	-2	-10.6	.146	-15	-10.6
17	Tommy Pham T. Pham	27	2015	STL	52	153	28	41	7	5	5	18	19	0	41	2	0	173	73	17	0	1	1	1	.268	.347	.477	.824	25	5.4	.352	126	5.3
18	Donovan Solano D. Solano	27	2015	MIA	55	90	6	17	3	1	0	7	1	2	18	0	0	94	22	4	1	0	0	4	.189	.215	.244	.459	2	-8.2	.204	24	-8.3
19	Blake Treinen B. Treinen	27	2015	WSH	57	2	0	0	0	0	0	0	0	0	1	0	0	4	0	0	2	0	0	0	.000	.000	.000	.000	-1	-1	.000	-119	-1
20	Justin Wilson J. Wilson	27	2015	NYY
21	Chris Bassitt C. Bassitt	26	2015	OAK	1	2	0	0	0	0	0	0	0	0	1	0	0	2	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.5	.000	-117	-0.5
22	Mark Canha M. Canha	26	2015	OAK	124	441	61	112	22	3	16	70	33	8	96	7	2	485	188	41	0	3	0	9	.254	.315	.426	.742	58	3.6	.323	106	3.1
23	Travis d'Arnaud T. d'Arnaud	26	2015	NYM	67	239	31	64	14	1	12	41	23	4	49	0	0	268	116	27	0	2	0	7	.268	.340	.485	.825	39	9	.355	130	9.4
24	Liam Hendriks L. Hendriks	26	2015	TOR	5	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	354	0.3
25	DJ LeMahieu	26	2015	COL	150	564	85	170	21	5	6	61	50	1	107	23	3	620	219	32	3	2	4	20	.301	.358	.388	.746	77	7	.327	91	-6.7