Alex Rodriguez has crushed the most career home runs by a player younger than 28, with 322 home runs.

Interpreted as:

most career home runs by a player before turning 28 years old

	NAME	HR	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Alex Rodriguez A. Rodriguez	322	1,217	4,775	954	1,467	276	19	936	520	67	956	169	45	5,425	2,747	617	16	47	30	106	.307	.380	.575	.955
2	Jimmie Foxx J. Foxx	302	1,256	4,397	975	1,492	257	79	1,076	782	7	644	48		5,241	2,813	638	55				.339	.440	.640	1.080
3	Eddie Mathews E. Mathews	299	1,177	4,346	821	1,221	181	42	777	725	12	680	36	18	5,138	2,383	522	26	29	49	57	.281	.383	.548	.931
4	Ken Griffey Jr. K. Griffey Jr.	294	1,214	4,593	820	1,389	261	24	872	580	33	755	123	48	5,262	2,580	579	6	50	142	87	.302	.381	.562	.943
5	Albert Pujols A. Pujols	282	1,091	4,054	847	1,344	298	13	861	592	55	452	38	23	4,741	2,514	593	1	39	120	141	.332	.420	.620	1.040
6	Mickey Mantle M. Mantle	280	1,246	4,478	993	1,392	208	54	841	892	8	904	97	28	5,408	2,548	542	12	18	54	44	.311	.425	.569	.994
7	Mike Trout M. Trout	278	1,173	4,251	881	1,301	250	45	737	780	77	1,088	198	36	5,156	2,475	573	0	48	97	57	.306	.419	.582	1.001
8	Mel Ott M. Ott	275	1,438	5,076	1,032	1,615	285	53	1,098	818	29	400	51		5,992	2,831	613	69				.318	.416	.558	.973
9	Giancarlo Stanton G. Stanton	267	986	3,577	576	960	202	10	672	487	36	1,140	36	14	4,119	1,983	479	0	19	74	73	.268	.360	.554	.914
10	Frank Robinson F. Robinson	260	1,177	4,335	826	1,318	246	39	795	541	89	616	123	44	5,021	2,422	545	13	43	89	110	.304	.389	.559	.948
11	Juan Gonzalez J. Gonzalez	256	950	3,663	567	1,045	196	16	790	247	38	716	16	11	3,985	2,041	468	2	35	47	99	.285	.334	.557	.891
12	Hank Aaron H. Aaron	253	1,194	4,717	830	1,506	264	67	863	397	17	441	57	24	5,201	2,663	584	19	51	92	132	.319	.371	.565	.935
13	Miguel Cabrera M. Cabrera	252	1,206	4,525	753	1,417	302	13	890	547	37	929	27	16	5,159	2,501	567	5	45	125	144	.313	.388	.553	.941
14	Andruw Jones A. Jones	251	1,308	4,745	765	1,265	252	30	771	508	47	1,033	125	49	5,345	2,330	533	6	39	39	114	.267	.341	.491	.832
15	Harmon Killebrew H. Killebrew	250	905	3,097	523	802	108	11	618	508	21	731	6	8	3,653	1,682	369	0	27	22	77	.259	.364	.543	.907
16	Juan Soto J. Soto	244	1,096	3,857	775	1,086	199	16	697	896	19	833	95	27	4,801	2,049	459	3	26	80	101	.282	.417	.531	.948
17	Johnny Bench J. Bench	240	1,236	4,595	695	1,246	236	18	855	516	13	751	40	26	5,192	2,238	494	5	63	95	123	.271	.342	.487	.829
18	Adam Dunn A. Dunn	238	973	3,354	620	833	178	8	572	675	51	1,092	57	18	4,098	1,741	424	2	16	68	50	.248	.381	.519	.900
19	Prince Fielder P. Fielder	235	1,027	3,634	589	1,030	203	9	671	580	79	799	17	10	4,333	1,956	447	0	40	118	85	.283	.390	.538	.928
20	Bryce Harper B. Harper	232	1,142	4,069	749	1,122	228	21	668	733	31	1,055	98	36	4,883	2,088	481	10	40	89	81	.276	.387	.513	.900
21	Jose Canseco J. Canseco	227	916	3,465	585	930	161	8	695	396	37	932	125	52	3,943	1,788	396	1	44	34	84	.268	.346	.516	.862
22	Orlando Cepeda O. Cepeda	222	1,084	4,120	646	1,270	223	22	749	253	49	618	93	48	4,462	2,203	467	1	39	64	112	.308	.352	.535	.887
23	Joe DiMaggio J. DiMaggio	219	979	3,978	858	1,349	243	82	929	405	24	196	25		4,418	2,413	544	11			42	.339	.403	.607	1.010
24	Willie Mays W. Mays	218	935	3,585	661	1,138	165	77	620	450	12	387	152	49	4,078	2,111	460	1	30	62	80	.317	.392	.589	.981
25	Darryl Strawberry D. Strawberry	215	957	3,361	570	875	169	29	625	510	22	850	176	67	3,928	1,747	413	1	34	93	40	.260	.358	.520	.878