4 players were tied for the youngest in 1945. They were 17 years old. The first three are Tommy Brown, Putsy Caballero and Art Houtteman.

	NAME	Age	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	GIDP	AVG	OBP	SLG	OPS	wRC	WRAA	wOBA	wRC+	BRAA
1	Tommy Brown T. Brown	17	1945	BKN	57	196	13	48	3	4	2	19	6	0	16	3		204	65	9	2	3	.245	.267	.332	.599	15	-6.9	.283	61	-9.5
2	Putsy Caballero P. Caballero	17	1945	PHN	9	1	1	0	0	0	0	1	0	0	0	0		1	0	0	0	0	.000	.000	.000	.000	0	-0.2	.000	-107	-0.2
3	Art Houtteman A. Houtteman	17	1945	DET	13	5	0	0	0	0	0	0	0	0	2	0	0	5	0	0	0	0	.000	.000	.000	.000	-1	-1.2	.000	-122	-1.2
4	Erv Palica E. Palica	17	1945	BKN	2	0	0	0	0	0	0	0	0	0	0	0		0	0	0	0	0
5	Granny Hamner G. Hamner	18	1945	PHN	14	41	3	7	2	0	0	6	1	0	3	0		42	9	2	0	1	.171	.190	.220	.410	1	-4.1	.196	11	-4.5
6	Don Hasenmayer D. Hasenmayer	18	1945	PHN	5	18	1	2	0	0	0	1	2	0	1	0		20	2	0	0	0	.111	.200	.111	.311	0	-2.3	.169	-5	-2.5
7	Whitey Lockman W. Lockman	18	1945	NYG	32	129	16	44	9	0	3	18	13	2	10	1		148	62	12	4	1	.341	.410	.481	.890	26	9.9	.421	144	7.8
8	Billy Pierce B. Pierce	18	1945	DET	5	2	0	0	0	0	0	0	0	0	1	0	0	2	0	0	0	1	.000	.000	.000	.000	0	-0.5	.000	-122	-0.5
9	Armando Roche A. Roche	18	1945	WSH	2	1	0	0	0	0	0	0	0	0	1	0	0	1	0	0	0	0	.000	.000	.000	.000	0	-0.2	.000	-114	-0.2
10	Carl Scheib C. Scheib	18	1945	PHA	4	2	0	0	0	0	0	0	0	0	0	0	0	2	0	0	0	0	.000	.000	.000	.000	0	-0.5	.000	-119	-0.5
11	Herm Wehmeier H. Wehmeier	18	1945	CIN	3	1	0	0	0	0	0	0	0	0	1	0		1	0	0	0	0	.000	.000	.000	.000	0	-0.2	.000	-105	-0.2
12	Ralph Branca R. Branca	19	1945	BKN	16	40	1	4	1	0	0	0	0	0	11	0		42	5	1	2	0	.100	.100	.125	.225	-2	-6.8	.105	-45	-7.3
13	Ray Medeiros R. Medeiros	19	1945	CIN	1	0	0	0	0	0	0	0	0	0	0	0		0	0	0	0	0
14	Cass Michaels C. Michaels	19	1945	CWS	129	445	47	109	8	5	2	54	37	3	28	8	7	499	133	15	14	13	.245	.307	.299	.606	42	-12.3	.295	78	-12.2
15	Hank Ruszkowski H. Ruszkowski	19	1945	CLE	14	49	2	10	0	0	0	5	4	0	9	0	0	53	10	0	0	2	.204	.264	.204	.468	2	-3.6	.235	41	-3.4
16	Bill Connelly B. Connelly	20	1945	PHA	2	1	0	0	0	0	0	0	0	1	0	0	0	2	0	0	0	0	.000	.500	.000	.500	0	0.1	.386	134	0.1
17	Claude Crocker C. Crocker	20	1945	BKN
18	Andy Hansen A. Hansen	20	1945	NYG	23	25	1	0	0	0	0	0	1	0	8	0		30	0	0	4	0	.000	.038	.000	.038	-3	-6.5	.028	-93	-7
19	Hal Schacker H. Schacker	20	1945	BSN	6	2	1	0	0	0	0	0	1	0	1	0		3	0	0	0	0	.000	.333	.000	.333	0	-0.2	.246	40	-0.2
20	Ed Stevens E. Stevens	20	1945	BKN	55	201	29	55	14	3	4	29	32	1	20	0		237	87	21	3	3	.274	.376	.433	.809	35	9.6	.385	123	6.6
21	Milt Welch M. Welch	20	1945	DET	1	2	0	0	0	0	0	0	0	0	1	0	0	2	0	0	0	0	.000	.000	.000	.000	0	-0.5	.000	-122	-0.5
22	Al Cihocki A. Cihocki	21	1945	CLE	92	283	21	60	9	3	0	24	11	0	48	2	1	307	75	12	13	5	.212	.241	.265	.507	14	-19.3	.242	46	-18.2
23	Tony Daniels T. Daniels	21	1945	PHN	76	230	15	46	3	2	0	10	12	3	22	1		250	53	5	5	8	.200	.249	.230	.479	10	-16.9	.236	35	-19.6
24	Cliff Fannin C. Fannin	21	1945	SLA	5	1	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	.000	.000	.000	.000	0	-0.2	.000	-121	-0.2
25	Don Grate D. Grate	21	1945	PHN	5	3	0	0	0	0	0	0	0	0	1	0		3	0	0	0	0	.000	.000	.000	.000	0	-0.7	.000	-107	-0.7