most bases on balls by player age 30 or younger

Mickey Mantle has the most career walks by a player 30 or younger, with 1,251 bases on balls.

	NAME	BB	G	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Mickey Mantle M. Mantle	1,251	1,675	5,895	1,339	1,821	256	67	404	1,152	10	1,218	132	33	7,199	3,423	727	13	30	78	62	.309	.429	.581	1.010
2	Eddie Yost E. Yost	1,192	1,556	5,604	916	1,430	266	53	93	514	67	662	55	34	6,956	2,081	412	88	5	10	104	.255	.392	.371	.763
3	Mel Ott M. Ott	1,140	1,864	6,544	1,332	2,061	359	63	369	1,389	38	566	62		7,808	3,653	791	86			5	.315	.419	.558	.978
4	Jimmie Foxx J. Foxx	1,106	1,710	6,116	1,355	2,048	346	102	429	1,522	9	935	76		7,293	3,885	877	62				.335	.437	.635	1.073
5	Ted Williams T. Williams	1,069	1,156	4,123	1,060	1,462	311	56	257	1,015	21	367	16		5,218	2,656	624	5			93	.355	.490	.644	1.134
6	Eddie Mathews E. Mathews	1,030	1,634	6,002	1,138	1,690	248	61	399	1,083	18	978	60	31	7,124	3,257	708	31	43	62	87	.282	.386	.543	.929
7	Frank Thomas F. Thomas	1,021	1,279	4,559	912	1,464	291	10	290	990	34	694	28	17	5,691	2,645	591	0	77	125	143	.321	.443	.580	1.023
8	Rickey Henderson R. Henderson	996	1,472	5,524	1,171	1,603	261	47	138	561	33	736	871	201	6,604	2,372	446	18	33	31	84	.290	.400	.429	.829
9	Adam Dunn A. Dunn	990	1,448	4,975	865	1,246	266	10	354	880	71	1,632	59	21	6,065	2,594	630	2	27	107	75	.250	.381	.521	.902
10	Harlond Clift H. Clift	982	1,436	5,259	1,013	1,458	294	62	170	768	36	647	67		6,328	2,386	526	51			45	.277	.394	.454	.848
11	Bryce Harper B. Harper	959	1,508	5,384	997	1,513	327	24	306	889	44	1,395	133	46	6,454	2,806	657	12	55	120	116	.281	.391	.521	.912
12	Donie Bush D. Bush	952	1,497	5,539	1,001	1,375	145	58	8		25		358		6,748	1,660	211	232				.248	.361	.300	.661
13	Babe Ruth B. Ruth	939	1,199	3,926	985	1,355	282	85	309	944	27	668	74		4,941	2,734	676	49				.345	.474	.696	1.171
14	Lou Gehrig L. Gehrig	938	1,438	5,344	1,261	1,831	378	126	316	1,352	23	563	78		6,407	3,409	820	102				.343	.443	.638	1.081
15	Joe Morgan J. Morgan	928	1,338	4,887	872	1,334	225	67	124	497	24	538	378	102	5,914	2,065	416	42	33	26	51	.273	.389	.423	.812
16	Albert Pujols A. Pujols	914	1,558	5,733	1,186	1,900	426	15	408	1,230	73	646	75	34	6,782	3,580	849	1	61	236	203	.331	.426	.624	1.050
17	Mike Trout M. Trout	904	1,367	4,938	1,022	1,495	285	51	334	867	91	1,312	204	37	5,985	2,884	670	0	52	115	61	.303	.416	.584	1.000
18	Barry Bonds B. Bonds	879	1,361	4,802	956	1,375	290	45	279	821	29	756	325	97	5,762	2,592	614	3	49	187	65	.286	.396	.540	.936
19	Ralph Kiner R. Kiner	870	1,212	4,327	827	1,214	167	34	329	887	22	618	20	3	5,223	2,436	530	4			103	.281	.404	.563	.967
20	Ron Santo R. Santo	859	1,690	6,214	899	1,740	277	58	279	1,051	28	1,004	29	33	7,186	2,970	614	10	75	72	180	.280	.366	.478	.844
21	Jim Thome J. Thome	851	1,198	4,058	799	1,158	235	18	276	792	37	1,202	17	12	4,982	2,257	529	1	35	64	81	.285	.411	.556	.967
22	Carl Yastrzemski C. Yastrzemski	849	1,504	5,601	890	1,655	341	37	235	848	19	754	99	64	6,504	2,775	613	9	26	80	161	.295	.388	.495	.884
23	Ken Griffey Jr. K. Griffey Jr.	841	1,680	6,352	1,163	1,883	342	33	438	1,270	56	1,101	173	64	7,319	3,605	813	6	64	187	116	.296	.380	.568	.948
24	Arky Vaughan A. Vaughan	831	1,539	5,763	1,018	1,846	309	120	86	814	42	245	94		6,740	2,653	515	104			17	.320	.410	.460	.870
25	Eddie Collins E. Collins	804	1,466	5,240	1,003	1,722	213	122	19		55		505		6,369	2,236	354	270				.329	.423	.427	.850