who was the last 18 year old or younger to hit a home run

Robin Yount was 18 years and 292 days old with >0 home runs versus the Twins on July 5, 1974.

Interpreted as:

Who was the last 18 year old in a game or younger to hit a home run?

	NAME	DATE	Age	HR	TM		OPP	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP
1	Robin Yount R. Yount	7/5/1974	18-292	1	MIL	vs	MIN	5	1	1	0	0	2	0	0	0	0	0	5	4	1	0	0	0	0
2	Robin Yount R. Yount	6/22/1974	18-279	1	MIL	vs	BAL	4	1	1	0	0	2	0	0	0	0	0	4	4	1	0	0	0	0
3	Robin Yount R. Yount	4/13/1974	18-209	1	MIL	vs	BAL	3	1	1	0	0	1	0	0	0	0	0	3	4	1	0	0	0	0
4	Larry Dierker L. Dierker	8/3/1965	18-315	1	HOU	@	STL	3	1	1	0	0	1	0	0	0	0	0	3	4	1	0	0	0	0
5	Jerry Moses J. Moses	5/25/1965	18-289	1	BOS	vs	MIN	1	1	1	0	0	1	0	0	0	0	0	1	4	1	0	0	0	0
6	Bill Southworth B. Southworth	10/4/1964	18-329	1	MIL	vs	PIT	3	1	1	0	0	2	0	1	2	0	0	4	4	1	0	0	0	0
7	Dave Duncan D. Duncan	9/25/1964	18-365	1	KCA	vs	CWS	4	1	1	0	0	2	0	0	0	0	0	4	4	1	0	0	0	0
8	Ed Kirkpatrick E. Kirkpatrick	9/25/1963	18-352	1	LAA	@	NYY	3	1	1	0	0	1	0	0	1	0	0	3	4	1	0	0	0	0
9	Ed Kirkpatrick E. Kirkpatrick	7/15/1963	18-280	1	LAA	vs	BOS	3	1	1	0	0	1	0	0	1	0	0	3	4	1	0	0	0	0
10	Ed Kranepool E. Kranepool	6/15/1963	18-219	1	NYM	@	CIN	4	1	1	0	0	1	1	0	0	0	0	5	4	1	0	0	0	0
11	Ed Kranepool E. Kranepool	4/19/1963	18-162	1	NYM	vs	MIL	4	1	1	0	0	1	0	0	1	0	0	4	4	1	0	0	0	0
12	Danny Murphy D. Murphy	9/13/1960	18-021	1	CHC	@	CIN	4	1	1	0	0	3	0	0	0	0	0	4	4	1	0	0	0	0
13	Lou Klimchock L. Klimchock	9/28/1958	18-348	1	KCA	@	CWS	5	1	2	0	0	1	0	0	0	0	0	5	5	1	0	0	0	0
14	Harmon Killebrew H. Killebrew	6/26/1955	18-362	1	WSH	vs	DET	4	1	1	0	0	2	1	0	2	0	0	5	4	1	0	0	0	0
15	Harmon Killebrew H. Killebrew	6/24/1955	18-360	1	WSH	vs	DET	4	1	1	0	0	1	0	0	1	0	0	4	4	1	0	0	0	0
16	Wayne Causey W. Causey	6/17/1955	18-173	1	BAL	vs	DET	4	1	2	0	0	1	0	0	0	0	0	4	5	1	0	0	0	0
17	Al Kaline A. Kaline	9/26/1953	18-281	1	DET	@	CLE	1	1	1	0	0	1	0	0	0	0	0	1	4	1	0		0	0
18	Dick Schofield D. Schofield	8/26/1953	18-231	1	SLN	@	NYG	4	1	1	0	0	1	0	0	1	0	0	4	4	1	0		0	0
19	Dick Schofield D. Schofield	8/16/1953	18-221	1	SLN	@	CIN	4	1	1	0	0	1	0	0	1	0	0	4	4	1	0		0	0
20	Billy Consolo B. Consolo	8/1/1953	18-348	1	BOS	vs	DET	5	1	3	0	0	3	0	0	1	0	1	5	6	1	0		0	0
21	Tommy Brown T. Brown	8/25/1945	17-262	1	BKN	vs	NYG	4	1	2	0	0	1	0	0	0	0	0	4	5	1	0			0
22	Tommy Brown T. Brown	8/20/1945	17-257	1	BKN	vs	PIT	4	1	2	0	0	1	0	0	1	0	0	4	5	1	0			0
23	Whitey Lockman W. Lockman	7/5/1945	18-345	1	NYG	vs	SLN	4	1	2	1	0	4	0	0	1	0	0	4	6	2	0			0
24	Phil Cavarretta P. Cavarretta	7/4/1935	18-350	1	CHC	vs	SLN	4	1	1	0	0	1	0	0	0	0	0	4	4	1	0			1
25	Phil Cavarretta P. Cavarretta	6/22/1935	18-338	1	CHC	@	BSN	4	1	2	1	0	1	1	0	0	0	0	5	6	2	0			0