Andrew McCutchen has the most career games by an active player, with 2,159 games.

Interpreted as:

longest service time in the regular season 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	2,159	7,978	1,249	2,179	435	50	322	1,107	1,130	93	1,795	220	89	9,276	3,680	807	3	72	69	138	.273	.367	.461	.828	1394	317.2	.359	127	294.9
2	Carlos Santana C. Santana	2,115	7,528	1,077	1,819	396	17	328	1,098	1,294	42	1,474	60	18	8,928	3,233	741	0	64	66	182	.242	.353	.429	.783	1227	185.8	.341	115	160.8
3	Freddie Freeman F. Freeman	2,059	7,655	1,316	2,302	515	32	351	1,261	1,023	108	1,652	98	31	8,848	3,934	898	0	62	137	161	.301	.388	.514	.902	1525	492	.383	143	458.9
4	Paul Goldschmidt P. Goldschmidt	1,965	7,257	1,225	2,103	454	23	365	1,204	1,061	50	1,906	171	35	8,424	3,698	842	0	56	118	169	.290	.382	.510	.891	1422	436	.379	139	391.9
5	Jose Altuve J. Altuve	1,856	7,436	1,173	2,268	435	31	233	826	610	76	1,059	318	93	8,196	3,464	699	26	48	46	198	.305	.362	.466	.827	1232	277.1	.356	129	282
6	Jason Heyward J. Heyward	1,815	6,146	876	1,571	306	41	185	726	705	62	1,232	125	43	6,953	2,514	532	6	34	27	103	.256	.337	.409	.746	865	57.1	.326	104	32.5
7	Manny Machado M. Machado	1,771	6,943	1,015	1,941	375	18	345	1,065	622	27	1,328	106	39	7,666	3,387	738	14	60	69	212	.280	.338	.488	.826	1121	220.6	.351	123	211.9
8	Nolan Arenado N. Arenado	1,714	6,535	960	1,859	396	33	344	1,146	565	41	1,059	29	23	7,222	3,353	773	5	76	79	195	.284	.342	.513	.855	1112	262.6	.359	118	157.8
9	Justin Turner J. Turner	1,700	5,593	801	1,589	347	9	198	821	579	136	990	46	13	6,374	2,548	554	5	61	18	144	.284	.362	.456	.817	950	200	.354	125	197.7
10	Bryce Harper B. Harper	1,690	6,074	1,104	1,703	376	24	342	996	1,062	46	1,566	146	50	7,253	3,153	742	13	58	133	136	.280	.388	.519	.907	1255	403.2	.383	141	365.3
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	1,588	6,017	665	1,604	298	11	275	936	251	85	1,208	6	1	6,406	2,749	584	0	53	38	186	.267	.303	.457	.760	792	48	.324	102	19.2
14	Nick Castellanos N. Castellanos	1,578	6,005	771	1,644	382	41	237	869	410	51	1,513	38	22	6,513	2,819	660	0	47	19	134	.274	.323	.469	.793	891	121.5	.338	111	93.2
15	Xander Bogaerts X. Bogaerts	1,566	5,984	900	1,724	363	18	187	799	561	55	1,208	112	22	6,662	2,684	568	5	57	22	153	.288	.352	.449	.800	949	163	.345	115	125.6
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	1,539	6,029	917	1,529	308	35	240	753	596	22	1,242	129	40	6,689	2,627	583	7	35	8	97	.254	.321	.436	.757	856	63.6	.326	108	67
18	Eugenio Suárez E. Suárez	1,509	5,367	761	1,327	240	15	286	854	600	91	1,659	33	19	6,124	2,455	541	9	57	15	121	.247	.330	.457	.787	841	113.3	.338	111	85.1
19	Marcell Ozuna M. Ozuna	1,503	5,674	778	1,546	265	21	280	893	541	24	1,378	29	14	6,270	2,693	566	1	30	18	143	.272	.337	.475	.811	905	168.7	.348	120	156.8
20	Christian Yelich C. Yelich	1,502	5,667	962	1,616	309	35	210	773	789	46	1,423	212	36	6,534	2,625	554	5	27	55	119	.285	.375	.463	.839	1017	249.4	.361	129	232.1
21	José Ramírez J. Ramírez	1,486	5,506	914	1,535	371	40	260	881	612	39	745	251	57	6,232	2,766	671	19	56	90	78	.279	.352	.502	.854	964	224.4	.359	129	216.7
22	Starling Marte S. Marte	1,457	5,522	847	1,572	279	55	156	645	325	162	1,213	357	98	6,053	2,429	490	21	23	18	115	.285	.341	.440	.781	823	115.5	.339	115	109.2
23	Mookie Betts M. Betts	1,416	5,627	1,100	1,650	375	40	276	853	693	50	870	190	39	6,426	2,933	691	4	52	33	74	.293	.373	.521	.894	1099	335.6	.379	139	306.8
24	Francisco Lindor F. Lindor	1,412	5,592	918	1,535	311	26	255	794	535	70	1,014	189	46	6,287	2,663	592	31	59	34	102	.274	.342	.476	.818	917	168.1	.348	121	157.4
25	George Springer G. Springer	1,339	5,161	893	1,357	230	23	265	727	628	77	1,237	107	40	5,899	2,428	518	2	31	12	110	.263	.350	.470	.820	881	182.8	.353	127	192.7