Justin Turner was the oldest active player in 2021. He was 36 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 Turner J. Turner	36	2021	LAD	151	533	87	148	22	0	27	87	61	12	98	3	0	612	251	49	0	6	0	12	.278	.361	.471	.832	96	22.3	.358	127	20.7
2	Yu Darvish Y. Darvish	34	2021	SDP	29	53	2	5	2	0	0	1	0	1	25	0	0	55	7	2	1	0	0	2	.094	.111	.132	.243	-3	-9.4	.108	-33	-9.3
3	Aroldis Chapman A. Chapman	33	2021	NYY	7	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
4	Jacob deGrom J. deGrom	33	2021	NYM	15	33	4	12	1	0	0	6	0	0	9	0	0	33	13	1	0	0	0	0	.364	.364	.394	.758	4	0.4	.331	110	0.4
5	Brooks Raley B. Raley	33	2021	HOU	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
6	Blake Treinen B. Treinen	33	2021	LAD	70	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
7	Travis d'Arnaud T. d'Arnaud	32	2021	ATL	60	209	21	46	14	0	7	26	17	2	53	0	0	229	81	21	0	1	0	7	.220	.284	.388	.671	23	-4.5	.291	79	-6.2
8	Liam Hendriks L. Hendriks	32	2021	CWS	6	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
9	Chris Sale C. Sale	32	2021	BOS	1	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	-119	-0.3
10	Jose Altuve J. Altuve	31	2021	HOU	146	601	117	167	32	1	31	83	66	4	91	5	3	678	294	64	1	6	3	9	.278	.350	.489	.839	106	23.8	.357	129	23.7
11	Nathan Eovaldi N. Eovaldi	31	2021	BOS	1	2	1	0	0	0	0	0	1	0	1	0	0	3	0	0	0	0	0	0	.000	.333	.000	.333	0	-0.2	.231	36	-0.2
12	Freddie Freeman F. Freeman	31	2021	ATL	159	600	120	180	25	2	31	83	85	8	107	8	3	695	302	58	0	2	15	11	.300	.393	.503	.896	121	37.2	.379	136	32
13	Sonny Gray S. Gray	31	2021	CIN	24	41	4	6	0	0	0	0	1	0	10	0	0	43	6	0	1	0	0	1	.146	.167	.146	.313	-1	-6.1	.142	-22	-6.7
14	Kyle Higashioka K. Higashioka	31	2021	NYY	67	193	20	35	10	0	10	29	17	0	59	0	0	211	75	20	0	1	0	4	.181	.246	.389	.635	18	-7.4	.272	72	-7.2
15	Tim Hill T. Hill	31	2021	SDP	73	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
16	Seth Lugo S. Lugo	31	2021	NYM	44	1	0	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	-104	-0.3
17	Salvador Perez S. Perez	31	2021	KCR	161	620	88	169	24	0	48	121	28	13	170	1	0	665	337	72	0	4	4	14	.273	.316	.544	.859	105	24.6	.359	125	20.4
18	Colin Rea C. Rea	31	2021	MIL	1	2	0	0	0	0	0	0	0	0	2	0	0	2	0	0	0	0	0	0	.000	.000	.000	.000	0	-0.5	.000	-109	-0.5
19	Anthony Rendon A. Rendon	31	2021	LAA	58	217	24	52	13	0	6	34	29	1	41	0	0	249	83	19	0	2	2	11	.240	.329	.382	.712	29	-0.9	.310	94	-1.8
20	Paul Sewald P. Sewald	31	2021	SEA	6	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
21	George Springer G. Springer	31	2021	TOR	78	299	59	79	19	1	22	50	37	4	79	4	1	341	166	42	0	1	1	6	.264	.352	.555	.907	60	18.8	.381	140	16.7
22	Giancarlo Stanton G. Stanton	31	2021	NYY	139	510	64	139	19	0	35	97	63	3	157	0	0	579	263	54	0	3	1	22	.273	.354	.516	.870	97	26.4	.370	138	27
23	Cole Sulser C. Sulser	31	2021	BAL	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
24	Brent Suter B. Suter	31	2021	MIL	60	4	0	0	0	0	0	0	0	0	3	0	0	4	0	0	0	0	0	0	.000	.000	.000	.000	-1	-1	.000	-109	-1.1
25	Zack Wheeler Z. Wheeler	31	2021	PHI	32	68	1	11	2	0	0	3	0	0	39	0	0	73	13	2	5	0	0	1	.162	.162	.191	.353	-1	-9.8	.153	-10	-10.2