Justin Turner was the oldest first baseman this season. He was 40 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	40	2025	CHC	80	169	14	37	7	0	3	18	17	1	37	2	0	191	53	10	0	4	0	3	.219	.288	.314	.602	16	-7	.268	72	-6.4
2	Carlos Santana C. Santana	39	2025	TOT	124	415	49	91	11	0	11	54	52	3	91	7	0	474	135	22	0	4	1	7	.219	.308	.325	.633	45	-11	.284	82	-10.3
3	Paul Goldschmidt P. Goldschmidt	37	2025	NYY	146	489	76	134	31	1	10	45	36	4	100	5	1	531	197	42	0	2	5	8	.274	.328	.403	.731	64	1.3	.316	102	1.5
4	Donovan Solano D. Solano	37	2025	TOT	71	166	10	41	4	1	3	21	8	3	40	0	0	179	56	8	0	2	0	9	.247	.291	.337	.628	16	-5.3	.277	81	-4
5	Freddie Freeman F. Freeman	35	2025	LAD	147	556	81	164	39	2	24	90	60	6	128	6	2	627	279	65	0	5	7	13	.295	.367	.502	.869	103	28.9	.370	140	30.1
6	Christian Walker C. Walker	34	2025	HOU	154	585	72	139	24	1	27	88	40	11	177	2	1	640	246	52	0	4	1	10	.238	.297	.421	.717	74	-1.4	.310	99	-0.4
7	Willson Contreras W. Contreras	33	2025	STL	135	490	70	126	31	1	20	80	44	23	142	5	1	562	219	52	1	4	1	15	.257	.344	.447	.791	81	14.2	.344	123	15.4
8	J.D. Davis	32	2025	LAA	5	9	0	1	0	0	0	0	0	0	3	0	0	9	1	0	0	0	0	0	.111	.111	.111	.222	-1	-1.6	.098	-50	-1.6
9	Bryce Harper B. Harper	32	2025	PHI	132	501	72	131	32	0	27	75	70	6	121	12	2	580	244	59	0	3	6	5	.261	.357	.487	.844	91	22.6	.361	133	22.4
10	Rhys Hoskins R. Hoskins	32	2025	MIL	90	279	30	66	12	1	12	43	38	5	91	2	1	328	116	25	0	6	2	6	.237	.332	.416	.748	42	3	.324	107	2.9
11	Ryan O'Hearn R. O'Hearn	31	2025	TOT	144	474	67	133	21	1	17	63	58	8	109	3	1	544	207	39	0	4	4	11	.281	.366	.437	.803	80	16	.349	128	17.7
12	Matt Olson M. Olson	31	2025	ATL	162	624	98	170	41	2	29	95	91	4	176	1	0	724	302	72	0	5	2	14	.272	.366	.484	.850	117	31.3	.366	135	30.2
13	LaMonte Wade Jr. L. Wade Jr.	31	2025	TOT	80	209	19	35	8	2	2	18	27	3	58	1	0	242	53	12	2	1	1	2	.167	.271	.254	.524	15	-14.1	.241	52	-13.7
14	Dominic Smith D. Smith	30	2025	SFG	63	204	26	58	12	0	5	33	15	2	42	2	0	225	85	17	0	4	0	5	.284	.333	.417	.750	29	2.2	.325	111	3
15	Rowdy Tellez R. Tellez	30	2025	TOT	112	289	34	66	11	0	17	49	17	3	83	1	0	312	128	28	0	3	0	9	.228	.276	.443	.719	35	-1.5	.307	100	-0.1
16	Ty France T. France	30	2025	TOT	138	444	50	114	25	0	7	52	22	21	83	1	0	490	160	32	0	3	1	11	.257	.320	.360	.681	53	-4.5	.302	93	-4.2
17	Nick Solak N. Solak	30	2025	PIT	4	11	0	1	0	0	0	0	0	0	2	0	0	11	1	0	0	0	0	0	.091	.091	.091	.182	-1	-2.1	.080	-62	-2.1
18	Pete Alonso P. Alonso	30	2025	NYM	162	624	87	170	41	1	38	126	61	15	162	1	2	709	327	80	0	9	5	23	.272	.347	.524	.871	116	31.8	.368	142	34.9
19	Bobby Dalbec B. Dalbec	30	2025	CWS	7	18	2	4	1	0	0	1	3	0	6	0	0	21	5	1	0	0	0	1	.222	.333	.278	.611	2	-0.5	.284	80	-0.5
20	Jake Bauers J. Bauers	29	2025	MIL	85	183	28	43	9	0	7	28	32	2	59	8	1	218	73	16	0	1	1	1	.235	.353	.399	.752	29	3.5	.333	113	3.4
21	Kody Clemens K. Clemens	29	2025	TOT	119	348	46	74	12	4	19	52	29	5	93	5	1	386	151	35	2	2	1	4	.213	.281	.434	.715	44	-2	.307	96	-1.9
22	Nathaniel Lowe N. Lowe	29	2025	TOT	153	540	64	123	23	3	18	84	62	2	159	1	0	609	206	44	0	5	2	6	.228	.307	.381	.689	66	-5.8	.301	91	-6.2
23	Jake Burger J. Burger	29	2025	TEX	103	356	43	84	15	1	16	53	12	5	93	1	1	376	149	32	0	3	0	3	.236	.269	.419	.687	39	-5.6	.295	88	-5.5
24	Ryan Noda R. Noda	29	2025	TOT	23	47	3	5	0	0	1	2	11	0	25	1	0	59	8	1	1	0	2	0	.106	.276	.170	.446	2	-4.9	.211	29	-4.9
25	Luis Arraez L. Arraez	28	2025	SDP	154	620	66	181	30	4	8	61	34	2	21	11	4	675	243	42	12	7	0	12	.292	.327	.392	.719	80	0.2	.313	104	3.2