Joe Medwick has gotten the most career doubles by a player younger than 25, with 202 doubles.

Interpreted as:

most doubles before turning 25 years old by a player

	NAME	2B	G	AB	R	H	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Joe Medwick J. Medwick	202	632	2,591	462	864	55	79	480	114	12	241	18		2,729	1,413	336	12				.333	.364	.545	.910
2	Cesar Cedeno C. Cedeno	195	820	3,160	508	926	28	103	440	263	28	455	255	83	3,491	1,486	326	12	28	34	68	.293	.350	.470	.820
3	Mel Ott M. Ott	195	983	3,367	680	1,059	31	176	713	540	18	258	38		3,978	1,844	402	53				.315	.412	.548	.960
4	Ken Griffey Jr. K. Griffey Jr.	194	845	3,180	518	972	19	172	543	374	18	477	88	41	3,606	1,720	385	5	29	100	64	.306	.379	.541	.920
5	Robin Yount R. Yount	191	972	3,764	487	1,031	38	55	383	206	7	415	97	47	4,068	1,463	284	63	28	12	63	.274	.311	.389	.699
6	Albert Pujols A. Pujols	189	629	2,363	500	787	9	160	504	304	35	279	13	13	2,728	1,474	358	1	25	43	75	.333	.413	.624	1.037
7	Vada Pinson V. Pinson	188	763	3,101	538	958	49	92	416	227	12	396	129	44	3,369	1,520	329	9	20	14	55	.309	.356	.490	.846
8	Miguel Cabrera M. Cabrera	185	735	2,750	457	857	10	141	534	329	25	605	17	11	3,136	1,485	336	5	27	70	89	.312	.387	.540	.927
9	Alex Rodriguez A. Rodriguez	181	728	2,897	578	903	12	172	541	266	26	562	126	35	3,232	1,624	365	16	27	7	59	.312	.372	.561	.932
10	Freddie Lindstrom F. Lindstrom	174	866	3,343	583	1,095	52	71	475	209	9	174	69		3,661	1,586	297	100				.328	.369	.474	.843
11	Buddy Lewis B. Lewis	172	848	3,497	583	1,069	63	49	426	363	11	210	66		3,920	1,514	284	49			27	.306	.373	.433	.806
12	Dick Bartell D. Bartell	171	634	2,487	403	756	44	8	255	192	21	166	37		2,819	1,039	223	119				.304	.359	.418	.777
13	Mike Trout M. Trout	168	762	2,837	565	868	35	160	471	436	41	735	130	23	3,348	1,586	363	0	34	42	38	.306	.402	.559	.961
14	Starlin Castro S. Castro	163	740	2,977	339	846	29	51	294	165	23	496	70	40	3,186	1,220	243	5	16	18	88	.284	.325	.410	.735
15	Orlando Cepeda O. Cepeda	163	749	2,933	460	906	16	154	544	168	31	451	76	41	3,156	1,563	333	0	24	44	77	.309	.350	.533	.883
16	Hal Trosky Sr. H. Trosky Sr.	160	623	2,531	435	785	36	136	554	206	8	240	12		2,752	1,425	332	7				.310	.364	.563	.927
17	Manny Machado M. Machado	159	687	2,769	391	766	8	121	352	206	13	519	34	19	3,020	1,304	288	14	18	15	72	.277	.328	.471	.799
18	Hank Aaron H. Aaron	159	732	2,895	497	914	39	140	494	230	9	261	12	9	3,173	1,571	338	18	21	42	89	.316	.365	.543	.908
19	Bobby Doerr B. Doerr	159	754	2,821	399	819	29	72	467	281	3	247	23		3,165	1,252	260	60			50	.290	.355	.444	.799
20	Jimmie Foxx J. Foxx	159	810	2,750	612	923	57	174	668	461	5	377	29		3,270	1,718	390	54				.336	.432	.625	1.057
21	Ivan Rodriguez I. Rodriguez	158	730	2,667	347	761	11	68	340	143	20	330	19	13	2,868	1,145	237	14	24	19	77	.285	.324	.429	.753
22	Ryan Zimmerman R. Zimmerman	157	595	2,339	345	663	12	90	359	225	10	441	18	10	2,597	1,114	259	1	22	19	76	.283	.346	.476	.822
23	Andruw Jones A. Jones	156	847	3,040	496	812	23	156	479	307	30	635	109	37	3,407	1,482	335	6	24	24	56	.267	.338	.488	.825
24	Rusty Staub R. Staub	156	833	2,906	297	792	12	57	370	323	21	311	8	6	3,306	1,143	225	27	29	75	74	.273	.346	.393	.740
25	Al Kaline A. Kaline	156	904	3,368	521	1,047	34	125	544	343	16	289	51	34	3,776	1,646	315	19	30	41	89	.311	.374	.489	.863