Andrew McCutchen has the most career games by an active player, with 2,162 games.

Interpreted as:

most times in the regular season on base by active player

	NAME	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	Andrew McCutchen A. McCutchen	2,162	7,988	1,249	2,181	436	50	322	1,109	1,132	93	1,796	220	89	9,289	3,683	808	3	73	70	139	.273	.367	.461	.828	1395	316.5	.358	127	294.2
2	Carlos Santana C. Santana	2,117	7,534	1,077	1,820	396	17	328	1,100	1,294	43	1,476	60	18	8,936	3,234	741	0	65	66	182	.242	.353	.429	.783	1228	185.1	.341	115	160.1
3	Freddie Freeman F. Freeman	2,061	7,663	1,318	2,304	516	32	351	1,262	1,023	108	1,655	98	31	8,857	3,937	899	0	63	137	161	.301	.388	.514	.902	1525	491.5	.383	143	458.3
4	Paul Goldschmidt P. Goldschmidt	1,967	7,266	1,227	2,106	454	23	366	1,205	1,062	50	1,908	171	35	8,434	3,704	843	0	56	118	169	.290	.382	.510	.891	1425	437.1	.379	139	393.1
5	Jose Altuve J. Altuve	1,858	7,440	1,174	2,270	436	31	233	826	611	76	1,059	318	93	8,201	3,467	700	26	48	46	198	.305	.362	.466	.828	1233	278.1	.356	129	283.1
6	Jason Heyward J. Heyward	1,818	6,161	879	1,573	306	41	186	730	705	62	1,234	125	43	6,968	2,519	533	6	34	27	104	.255	.336	.409	.745	866	55.7	.326	104	31.2
7	Manny Machado M. Machado	1,774	6,954	1,019	1,947	377	18	345	1,069	623	27	1,329	106	39	7,678	3,395	740	14	60	69	212	.280	.339	.488	.827	1125	223	.351	123	214.3
8	Nolan Arenado N. Arenado	1,717	6,547	963	1,864	397	33	345	1,148	565	42	1,062	29	23	7,235	3,362	775	5	76	79	196	.285	.342	.514	.855	1115	264.8	.360	118	159.9
9	Justin Turner J. Turner	1,702	5,598	801	1,589	347	9	198	821	581	136	991	46	13	6,381	2,548	554	5	61	18	144	.284	.362	.455	.817	950	199.4	.353	125	197
10	Bryce Harper B. Harper	1,692	6,083	1,105	1,706	377	24	343	998	1,062	46	1,569	146	50	7,262	3,160	744	13	58	133	136	.280	.388	.519	.908	1257	404.3	.383	141	366.4
11	Giancarlo Stanton G. Stanton	1,649	6,025	907	1,551	305	11	429	1,103	776	53	1,963	42	15	6,893	3,165	745	0	39	88	153	.257	.345	.525	.871	1093	294.9	.368	135	288.9
12	DJ LeMahieu	1,628	6,004	883	1,738	275	39	124	651	561	31	1,013	93	49	6,680	2,463	438	37	47	24	185	.289	.351	.410	.761	874	88.7	.331	100	6.2
13	Salvador Perez S. Perez	1,591	6,030	665	1,607	298	11	275	936	251	85	1,211	6	1	6,419	2,752	584	0	53	38	186	.267	.303	.456	.759	792	46.8	.323	102	18.1
14	Nick Castellanos N. Castellanos	1,580	6,014	772	1,647	382	41	237	869	410	51	1,514	38	22	6,522	2,822	660	0	47	19	135	.274	.323	.469	.792	892	121.3	.337	111	93
15	Xander Bogaerts X. Bogaerts	1,569	5,993	902	1,726	363	18	188	801	563	55	1,209	112	22	6,674	2,689	569	5	58	22	153	.288	.351	.449	.800	951	163.5	.345	115	126.1
16	Mike Trout M. Trout	1,547	5,616	1,137	1,667	312	55	387	972	992	101	1,520	214	38	6,766	3,250	754	0	57	122	69	.297	.408	.579	.987	1327	541.2	.413	168	543.7
17	Marcus Semien M. Semien	1,542	6,040	918	1,531	308	35	241	756	598	22	1,246	129	40	6,702	2,632	584	7	35	8	97	.253	.321	.436	.757	858	63.8	.326	108	67.3
18	Eugenio Suárez E. Suárez	1,511	5,374	765	1,330	241	15	288	858	602	91	1,661	33	19	6,133	2,465	544	9	57	15	121	.247	.330	.459	.789	845	116.5	.338	112	88.2
19	Marcell Ozuna M. Ozuna	1,506	5,684	778	1,547	266	21	280	893	544	24	1,379	29	14	6,283	2,695	567	1	30	19	143	.272	.337	.474	.811	906	167.9	.348	120	155.9
20	Christian Yelich C. Yelich	1,505	5,679	964	1,620	309	35	211	774	789	46	1,426	213	37	6,546	2,632	555	5	27	55	120	.285	.375	.463	.839	1020	250.2	.362	129	232.9
21	José Ramírez J. Ramírez	1,488	5,513	915	1,539	372	40	261	882	613	39	747	252	58	6,240	2,774	673	19	56	90	78	.279	.352	.503	.855	968	227.1	.360	129	219.4
22	Starling Marte S. Marte	1,458	5,524	848	1,573	279	55	156	645	325	163	1,213	357	98	6,056	2,430	490	21	23	18	115	.285	.342	.440	.781	824	116	.339	115	109.8
23	Mookie Betts M. Betts	1,418	5,636	1,100	1,652	375	40	276	854	693	50	871	191	39	6,436	2,935	691	4	53	33	75	.293	.372	.521	.893	1099	334.5	.379	139	305.7
24	Francisco Lindor F. Lindor	1,415	5,605	921	1,541	311	26	257	796	536	70	1,018	191	46	6,301	2,675	594	31	59	34	103	.275	.342	.477	.820	922	171.3	.349	121	160.6
25	George Springer G. Springer	1,342	5,175	897	1,361	231	23	266	730	629	77	1,240	108	40	5,914	2,436	520	2	31	12	111	.263	.350	.471	.820	884	183.7	.353	127	193.7