Mel Ott has the most career total bases by a player younger than 23, with 1,233 bases.

Interpreted as:

most total bases by a player before 23 year old

	NAME	TB	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Mel Ott M. Ott	1,233	677	2,221	463	715	129	22	115	487	365	12	171	31		2,644	266	46				.322	.420	.555	.975
2	Al Kaline A. Kaline	1,109	622	2,314	352	710	103	25	82	365	218	10	200	34	24	2,575	210	14	19	23	59	.307	.366	.479	.846
3	Ken Griffey Jr. K. Griffey Jr.	1,069	578	2,165	311	652	132	12	87	344	222	10	313	60	29	2,422	231	5	20	56	41	.301	.366	.494	.860
4	Alex Rodriguez A. Rodriguez	989	456	1,829	337	567	117	10	95	312	137	19	350	79	21	2,011	222	14	12	2	36	.310	.362	.541	.903
5	Jimmie Foxx J. Foxx	988	517	1,650	368	560	94	38	86	379	272	4	197	22		1,976	218	50				.339	.434	.599	1.033
6	Cesar Cedeno C. Cedeno	985	529	2,050	320	618	135	20	64	275	137	17	300	148	49	2,227	219	8	15	19	47	.301	.348	.480	.828
7	Buddy Lewis B. Lewis	981	550	2,301	387	695	105	38	35	298	210	9	146	39		2,563	178	43			5	.302	.363	.426	.789
8	Freddie Lindstrom F. Lindstrom	981	588	2,185	357	689	112	39	34	278	131	9	112	44		2,390	185	65				.315	.357	.449	.806
9	Mickey Mantle M. Mantle	956	511	1,894	388	561	89	27	84	346	297	0	382	24	14	2,201	200	6	4		13	.296	.391	.505	.896
10	Bryce Harper B. Harper	947	510	1,830	328	528	98	15	97	248	279	13	449	37	16	2,143	210	9	12	23	33	.289	.384	.517	.902
11	Ted Williams T. Williams	946	410	1,502	377	531	112	27	83	354	314	8	140	8		1,828	222	4			32	.354	.468	.630	1.097
12	Robin Yount R. Yount	941	683	2,590	299	706	114	23	25	246	145	5	299	66	33	2,809	162	47	22	8	40	.273	.310	.363	.673
13	Mike Trout M. Trout	937	445	1,695	336	527	105	22	87	277	247	22	426	98	12	1,987	214	0	23	15	21	.311	.401	.553	.953
14	Tony Conigliaro T. Conigliaro	934	494	1,832	287	505	79	19	104	294	164	20	364	10	14	2,046	202	14	16	17	29	.276	.339	.510	.849
15	Orlando Cepeda O. Cepeda	894	438	1,738	254	539	107	10	76	293	86	14	262	52	26	1,855	193	0	17	24	41	.310	.344	.514	.859
16	Vada Pinson V. Pinson	891	448	1,850	333	568	115	26	52	213	143	7	262	71	29	2,013	193	7	6	7	29	.307	.358	.482	.840
17	Juan Soto J. Soto	886	464	1,612	337	485	91	8	98	312	373	6	352	32	12	2,003	197	1	11	48	44	.301	.432	.550	.981
18	Eddie Mathews E. Mathews	886	440	1,583	286	441	75	17	112	296	270	5	261	17	10	1,874	204	9	7		25	.279	.384	.560	.944
19	Johnny Bench J. Bench	880	486	1,787	254	502	101	8	87	326	139	6	303	12	14	1,963	196	4	27	24	38	.281	.330	.492	.823
20	Hank Aaron H. Aaron	874	428	1,679	270	520	98	29	66	267	114	8	154	7	7	1,834	193	18	15	11	54	.310	.354	.521	.874
21	Frank Robinson F. Robinson	873	425	1,640	294	488	74	16	93	222	159	38	254	26	7	1,859	183	13	9	17	37	.298	.371	.532	.903
22	Andruw Jones A. Jones	831	522	1,740	264	455	94	15	84	263	188	18	376	75	29	1,962	193	6	10	21	37	.261	.338	.478	.816
23	Miguel Cabrera M. Cabrera	824	417	1,574	253	472	100	6	80	300	164	10	368	7	5	1,767	186	4	15	21	53	.300	.366	.524	.890
24	Ed Kranepool E. Kranepool	801	648	2,157	201	543	88	13	48	223	167	8	289	6	14	2,364	149	10	22	33	51	.252	.305	.371	.676
25	Joe DiMaggio J. DiMaggio	785	289	1,258	283	421	79	30	75	292	89	9	76	7		1,361	184	5				.335	.383	.624	1.007