youngest player to hit 45 home runs in a season

Junior Caminero and Eddie Mathews are tied for the youngest with 45+ home runs in a season. They were 21 years old.

Interpreted as:

youngest player to hit 45 or more home runs in a season

	NAME	AGE	HR	SEASON	TM	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Junior Caminero J. Caminero	21	45	2025	TBR	154	602	93	159	28	0	110	41	3	125	7	1	653	322	73	0	7	1	31	.264	.311	.535	.846	100	23	.357	134	26.3
2	Eddie Mathews E. Mathews	21	47	1953	MIL	157	579	110	175	31	8	135	99	2	83	1	3	681	363	86	1			6	.302	.406	.627	1.033	144	62.6	.451	168	60.8
3	Vladimir Guerrero Jr. V. Guerrero Jr.	22	48	2021	TOR	161	604	123	188	29	1	111	86	6	110	4	1	698	363	78	0	2	7	20	.311	.401	.601	1.002	145	60.4	.419	166	56.1
4	Johnny Bench J. Bench	22	45	1970	CIN	158	605	97	177	35	4	148	54	0	102	5	2	671	355	84	1	11	9	12	.293	.345	.587	.932	118	41.7	.399	145	37.2
5	Joe DiMaggio J. DiMaggio	22	46	1937	NYY	151	621	151	215	35	15	167	64	5	37	3	0	692	418	96	2				.346	.412	.673	1.085	160	73.6	.474	165	64.8
6	Cody Bellinger C. Bellinger	23	47	2019	LAD	156	558	121	170	34	3	115	95	3	108	15	5	660	351	84	0	4	21	10	.305	.406	.629	1.035	137	54.2	.415	160	52.6
7	Prince Fielder P. Fielder	23	50	2007	MIL	158	573	109	165	35	2	119	90	14	121	2	2	681	354	87	0	4	21	9	.288	.395	.618	1.013	134	50.1	.419	153	46.7
8	Troy Glaus T. Glaus	23	47	2000	ANA	159	563	120	160	37	1	102	112	2	163	14	11	678	340	85	0	1	6	14	.284	.404	.604	1.008	138	49	.424	150	46
9	Juan Gonzalez J. Gonzalez	23	46	1993	TEX	140	536	105	166	33	1	118	37	13	99	4	1	587	339	80	0	1	7	12	.310	.368	.632	1.000	118	47.5	.427	164	46.1
10	Ken Griffey Jr. K. Griffey Jr.	23	45	1993	SEA	156	582	113	180	38	3	109	96	6	91	17	9	691	359	86	0	7	25	14	.309	.408	.617	1.025	140	57.7	.430	164	54.4
11	Mark McGwire M. McGwire	23	49	1987	OAK	151	557	97	161	28	4	118	71	5	131	1	1	641	344	81	0	8	8	6	.289	.370	.618	.987	124	45.2	.411	157	46.2
12	Reggie Jackson R. Jackson	23	47	1969	OAK	152	549	123	151	36	3	118	114	12	142	13	5	677	334	86	1	1	20	8	.275	.410	.608	1.018	137	64.9	.442	179	62.1
13	Orlando Cepeda O. Cepeda	23	46	1961	SFG	152	585	105	182	28	4	142	39	9	91	12	8	636	356	78	0	3	11	21	.311	.362	.609	.970	121	45.5	.413	153	42.5
14	Pete Alonso P. Alonso	24	53	2019	NYM	161	597	103	155	30	2	120	72	21	183	1	0	693	348	85	0	3	6	13	.260	.358	.583	.941	126	38.4	.384	144	40.3
15	Adam Dunn A. Dunn	24	46	2004	CIN	161	568	105	151	34	0	102	108	5	195	6	1	681	323	80	0	0	11	8	.266	.388	.569	.956	126	41.2	.402	142	37
16	Albert Pujols A. Pujols	24	46	2004	STL	154	592	133	196	51	2	123	84	7	52	5	5	692	389	99	0	9	12	21	.331	.415	.657	1.072	151	65.3	.442	171	63.6
17	Mickey Mantle M. Mantle	24	52	1956	NYY	150	533	132	188	22	5	130	112	2	99	10	1	652	376	79	1	4	6	4	.353	.464	.705	1.169	164	88.9	.498	202	84.6
18	Willie Mays W. Mays	24	51	1955	NYG	152	580	123	185	18	13	127	79	4	60	24	4	670	382	82	0	7	13	12	.319	.400	.659	1.059	143	65.3	.450	171	59.7
19	Ralph Kiner R. Kiner	24	51	1947	PIT	152	565	118	177	23	4	127	98	2	81	1		666	361	78	1			12	.313	.417	.639	1.055	145	69.5	.472	169	58.2
20	Jimmie Foxx J. Foxx	24	58	1932	PHA	154	585	151	213	33	9	169	116	0	96	3	7	701	438	100	0				.364	.469	.749	1.218	193	105.6	.522	198	95.8
21	Lou Gehrig L. Gehrig	24	47	1927	NYY	155	584	149	218	52	18	173	109	3	84	10	8	717	447	117	21				.373	.474	.765	1.240	199	110.9	.540	209	105.6
22	Aaron Judge A. Judge	25	52	2017	NYY	155	542	128	154	24	3	114	127	5	208	9	4	678	340	79	0	4	11	15	.284	.422	.627	1.049	145	62.5	.430	174	61.5
23	Prince Fielder P. Fielder	25	46	2009	MIL	162	591	103	177	35	3	141	110	9	138	2	3	719	356	84	0	9	21	14	.299	.412	.602	1.014	142	55.5	.422	161	54.1
24	Adrian Beltre A. Beltre	25	48	2004	LAD	156	598	104	200	32	0	121	53	2	87	7	2	657	376	80	0	4	9	15	.334	.388	.629	1.017	133	51.9	.423	161	52
25	Alex Rodriguez A. Rodriguez	25	52	2001	TEX	162	632	133	201	34	1	135	75	16	131	18	3	732	393	87	0	9	6	17	.318	.399	.622	1.021	151	60.3	.425	159	54.3