Andrew McCutchen has the most career games by an active player, with 2,197 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	2,197	8,120	1,263	2,216	442	50	327	1,123	1,145	94	1,833	220	89	9,436	3,739	819	3	74	70	139	.273	.366	.460	.827	1414	318.5	.358	127	295.6
2	Carlos Santana C. Santana	2,151	7,650	1,092	1,848	399	17	332	1,118	1,311	43	1,500	62	18	9,069	3,277	748	0	65	66	187	.242	.353	.428	.781	1243	185.3	.340	115	160.6
3	Freddie Freeman F. Freeman	2,099	7,807	1,338	2,347	529	32	352	1,273	1,038	110	1,692	98	31	9,019	3,996	913	0	64	140	166	.301	.388	.512	.899	1547	494.6	.382	142	461.6
4	Paul Goldschmidt P. Goldschmidt	2,005	7,399	1,252	2,138	461	24	370	1,219	1,074	51	1,935	174	35	8,580	3,757	855	0	56	119	170	.289	.380	.508	.888	1440	436.2	.378	138	392.2
5	Jose Altuve J. Altuve	1,896	7,583	1,192	2,310	441	31	241	846	625	77	1,081	321	95	8,361	3,536	713	26	50	48	202	.305	.361	.466	.828	1257	282.8	.356	129	288
6	Manny Machado M. Machado	1,813	7,106	1,043	1,990	383	18	355	1,096	639	27	1,356	107	40	7,848	3,474	756	14	62	69	217	.280	.339	.489	.828	1152	230.6	.351	124	222.6
7	Nolan Arenado N. Arenado	1,753	6,685	981	1,896	398	34	351	1,171	572	43	1,077	29	23	7,383	3,415	783	5	78	80	198	.284	.340	.511	.851	1128	260.6	.358	117	156
8	Justin Turner J. Turner	1,720	5,641	804	1,600	349	9	199	826	585	136	995	46	13	6,430	2,564	557	5	63	18	145	.284	.361	.455	.816	955	198.5	.353	125	196.3
9	Bryce Harper B. Harper	1,710	6,147	1,114	1,725	382	24	345	1,010	1,070	49	1,580	148	50	7,338	3,190	751	13	59	133	136	.281	.388	.519	.907	1269	408	.383	141	370
10	DJ LeMahieu	1,661	6,102	892	1,762	278	39	126	661	572	31	1,037	93	49	6,789	2,496	443	37	47	24	188	.289	.350	.409	.759	885	87.2	.331	100	4.9
11	Giancarlo Stanton G. Stanton	1,656	6,048	907	1,558	306	11	429	1,104	778	53	1,972	42	15	6,918	3,173	746	0	39	88	154	.258	.345	.525	.870	1096	295	.368	135	289
12	Salvador Perez S. Perez	1,626	6,169	675	1,639	304	11	282	957	257	87	1,243	6	1	6,566	2,811	597	0	53	40	190	.266	.302	.456	.758	807	44.5	.323	102	15
13	Nick Castellanos N. Castellanos	1,618	6,159	791	1,689	393	42	241	889	417	53	1,543	40	22	6,679	2,889	676	0	50	19	137	.274	.323	.469	.792	913	124.1	.337	111	95.6
14	Xander Bogaerts X. Bogaerts	1,607	6,131	918	1,761	369	18	190	813	577	55	1,228	119	23	6,828	2,736	577	5	60	23	156	.287	.351	.446	.797	966	160.5	.344	115	123.7
15	Marcus Semien M. Semien	1,580	6,170	935	1,566	315	36	245	771	613	24	1,270	134	40	6,852	2,688	596	7	38	8	98	.254	.322	.436	.757	878	66.5	.327	108	70.1
16	Mike Trout M. Trout	1,570	5,697	1,148	1,690	313	55	390	982	1,009	102	1,546	214	38	6,866	3,283	758	0	58	125	71	.297	.408	.576	.984	1341	544.4	.413	167	546.8
17	Eugenio Suárez E. Suárez	1,549	5,515	788	1,371	249	15	301	898	607	98	1,700	33	19	6,289	2,553	565	9	60	15	124	.249	.331	.463	.793	874	127.5	.340	113	99
18	Marcell Ozuna M. Ozuna	1,543	5,822	795	1,580	271	21	286	920	565	25	1,420	29	14	6,446	2,751	578	1	33	20	148	.271	.337	.473	.809	926	169.1	.347	120	156.9
19	Christian Yelich C. Yelich	1,540	5,816	984	1,664	316	35	219	804	801	48	1,466	217	39	6,697	2,707	570	5	27	57	121	.286	.376	.465	.841	1047	260.1	.362	129	242.7
20	José Ramírez J. Ramírez	1,525	5,656	941	1,590	380	41	268	900	627	40	762	263	60	6,398	2,856	689	19	56	95	79	.281	.354	.505	.859	999	240	.361	130	232.6
21	Starling Marte S. Marte	1,483	5,596	859	1,595	283	55	158	651	332	165	1,226	358	100	6,138	2,462	496	22	23	18	117	.285	.342	.440	.782	836	119.2	.339	116	113.3
22	Mookie Betts M. Betts	1,453	5,773	1,121	1,686	380	40	280	869	710	50	887	194	39	6,590	2,986	700	4	53	35	76	.292	.371	.517	.889	1116	333.7	.377	138	305.2
23	Francisco Lindor F. Lindor	1,452	5,750	943	1,576	318	26	264	812	551	72	1,051	198	47	6,465	2,738	608	31	61	36	105	.274	.342	.476	.818	942	172.2	.348	121	162.2
24	George Springer G. Springer	1,377	5,290	913	1,384	237	23	271	744	643	79	1,266	109	40	6,048	2,480	531	2	34	12	116	.262	.348	.469	.817	897	181.5	.352	126	191.7
25	Joc Pederson J. Pederson	1,318	3,809	588	903	186	18	211	555	517	87	1,048	30	27	4,444	1,758	415	6	25	27	68	.237	.340	.462	.801	630	102.6	.344	118	98.6