Pete Alonso: the Met, the man, Mr. Met. Sets NL rookie HR record.

Pete Alonso hit home run number 40 yesterday, breaking a tie for National League home runs by a rookie. Dodger Cody Bellinger had hit 39 in 2017.

Babe Ruth first set the season record for home runs in the short season of 1919, his last with the Red Sox; Ruth hit 29. In 1920, his first with the Yankees, Ruth broke the season record with 54, which, of course, was a new Yankee team record. In 1961 Roger Maris hit 61 home runs to break Ruth's record of 60 but that was in his second season with the Yankees, although Maris was still only 26 until September and not that much older than Alonso.

In 1946 23 year old Pittsburgh rookie Ralph Kiner led the National League with 23 home runs.

In 1950 26 year old Cleveland rookie Al Rosen led the American League with 37 home runs.

In 1987 23 year old rookie Oakland Mark McGwire led the American League with 49 home runs.

So Pete Alonso cannot be the first to do any of those things. But he can:
- break the Met record for home runs in a season of 41 by:
    Todd Hundley, all as a catcher, the most ever
    Carlos Beltran
- break the MLB record for most rookie home runs: 52 by 25 year old Yankee Aaron Judge in 2017.

Both Judge and Alonso are rather old rookies. But since 1920 the oldest rookie with at least 20 home runs was 34 year old Luke Easter: 28 home runs in 1950 with Cleveland.

29 rookies have hit at least 30 home runs, including Mike Trout in 2012.

Oldest rookies with at least 30 home runs:

Rk	Name	Age	HR	Year	Tm	Lg	G	PA	AB	R	H	2B	3B	RBI	BB	IBB	SO	HBP	SH	SF	GDP	SB	CS	BA	OBP	SLG	OPS	Pos
1	Jose Abreu (RoY-1st)	27	36	2014	CHW	AL	145	622	556	80	176	35	2	107	51	15	131	11	0	4	14	3	1	.317	.383	.581	.964	*3D/H
2	Walt Dropo (RoY-1st)	27	34	1950	BOS	AL	136	609	559	101	180	28	8	144	45	3	75	5	0		16	0	0	.322	.378	.583	.961	*3/H
3	Al Rosen	26	37	1950	CLE	AL	155	668	554	100	159	23	4	116	100	3	72	10	4		27	5	7	.287	.405	.543	.948	*5/H
4	Aaron Judge (RoY-1st)	25	52	2017	NYY	AL	155	678	542	128	154	24	3	114	127	11	208	5	0	4	15	9	4	.284	.422	.627	1.049	*9D/H
5	Ron Kittle (RoY-1st)	25	35	1983	CHW	AL	145	570	520	75	132	19	3	100	39	8	150	8	0	3	10	8	3	.254	.314	.504	.818	*7/HD8
6	Tony Oliva (RoY-1st)	25	32	1964	MIN	AL	161	719	672	109	217	43	9	94	34	8	68	6	3	3	9	12	6	.323	.359	.557	.916	*9/8H7
7	Jimmie Hall (RoY-3rd)	25	33	1963	MIN	AL	156	571	497	88	129	21	5	80	63	4	101	0	9	2	8	3	3	.260	.342	.521	.863	*8*7H9
8	Tim Salmon (RoY-1st)	24	31	1993	CAL	AL	142	610	515	93	146	35	1	95	82	5	135	5	0	8	6	5	6	.283	.382	.536	.918	*9/8D
9	Bob Allison (RoY-1st)	24	30	1959	WSH	AL	150	638	570	83	149	18	9	85	60	1	92	2	5	2	22	13	8	.261	.333	.482	.815	*8/97H
10	Pete Alonso	24	40	2019	NYM	NL	123	526	447	76	121	25	2	95	59	3	133	17	0	3	10	1	0	.271	.375	.604	.979	*3/HD
11	Wally Berger	24	38	1930	BSN	NL	151	628	555	98	172	27	14	119	54		69	4	12			3		.310	.375	.614	.990	*7/H
12	Mike Piazza (RoY-1st)	24	35	1993	LAD	NL	149	602	547	81	174	24	2	112	46	6	86	3	0	6	10	3	4	.318	.370	.561	.932	*2/H3
13	Mark McGwire (RoY-1st)	23	49	1987	OAK	AL	151	641	557	97	161	28	4	118	71	8	131	5	0	8	6	1	1	.289	.370	.618	.987	*3/59H

Youngest rookies with at least 30 home runs:

k	Name	Age ▲	HR	Year	Tm	Lg	G	PA	AB	R	H	2B	3B	RBI	BB	IBB	SO	HBP	SH	SF	GDP	SB	CS	BA	OBP	SLG	OPS	Pos
1	Frank Robinson (RoY-1st)	20	38	1956	CIN	NL	152	667	572	122	166	27	6	83	64	7	95	20	8	4	14	8	4	.290	.379	.558	.936	*7/8H
2	Ted Williams	20	31	1939	BOS	AL	149	675	565	131	185	44	11	145	107		64	2	3		10	2	1	.327	.436	.609	1.045	*9
3	Mike Trout (RoY-1st)	20	30	2012	LAA	AL	139	639	559	129	182	27	8	83	67	4	139	6	0	7	7	49	5	.326	.399	.564	.963	*87/9H
4	Albert Pujols (RoY-1st)	21	37	2001	STL	NL	161	676	590	112	194	47	4	130	69	6	93	9	1	7	21	1	3	.329	.403	.610	1.013	5379/HD
5	Jose Canseco (RoY-1st)	21	33	1986	OAK	AL	157	682	600	85	144	29	1	117	65	1	175	8	0	9	12	15	7	.240	.318	.457	.775	*79/HD
6	Cody Bellinger (RoY-1st)	21	39	2017	LAD	NL	132	548	480	87	128	26	4	97	64	13	146	1	0	3	5	10	3	.267	.352	.581	.933	*37/9H8D
7	Hal Trosky	21	35	1934	CLE	AL	154	685	625	117	206	45	9	142	58		49	2	0			2	2	.330	.388	.598	.987	*3
8	Jim Ray Hart (RoY-2nd)	22	31	1964	SFG	NL	153	625	566	71	162	15	6	81	47	4	94	4	2	6	13	5	2	.286	.342	.498	.840	*5/9H7
9	Earl Williams (RoY-1st)	22	33	1971	ATL	NL	145	550	497	64	129	14	1	87	42	5	80	7	0	4	11	0	1	.260	.324	.491	.815	253H
10	Pete Incaviglia	22	30	1986	TEX	AL	153	606	540	82	135	21	2	88	55	2	185	4	0	7	9	3	2	.250	.320	.463	.783	*9D/H7

Frank Robinson and Wally Berger held the MLB rookie record until 1987 and the NL rookie record until 2017.

At least 36 home runs as a rookie:

Rk	Name	Age	HR ▼	Year	Tm	Lg	G	PA	AB	R	H	2B	3B	RBI	BB	IBB	SO	HBP	SH	SF	GDP	SB	CS	BA	OBP	SLG	OPS	Pos
1	Aaron Judge (RoY-1st)	25	52	2017	NYY	AL	155	678	542	128	154	24	3	114	127	11	208	5	0	4	15	9	4	.284	.422	.627	1.049	*9D/H
2	Mark McGwire (RoY-1st)	23	49	1987	OAK	AL	151	641	557	97	161	28	4	118	71	8	131	5	0	8	6	1	1	.289	.370	.618	.987	*3/59H
3	Pete Alonso	24	40	2019	NYM	NL	123	526	447	76	121	25	2	95	59	3	133	17	0	3	10	1	0	.271	.375	.604	.979	*3/HD
4	Cody Bellinger (RoY-1st)	21	39	2017	LAD	NL	132	548	480	87	128	26	4	97	64	13	146	1	0	3	5	10	3	.267	.352	.581	.933	*37/9H8D
5	Frank Robinson (RoY-1st)	20	38	1956	CIN	NL	152	667	572	122	166	27	6	83	64	7	95	20	8	4	14	8	4	.290	.379	.558	.936	*7/8H
6	Wally Berger	24	38	1930	BSN	NL	151	628	555	98	172	27	14	119	54		69	4	12			3		.310	.375	.614	.990	*7/H
7	Albert Pujols (RoY-1st)	21	37	2001	STL	NL	161	676	590	112	194	47	4	130	69	6	93	9	1	7	21	1	3	.329	.403	.610	1.013	5379/HD
8	Al Rosen	26	37	1950	CLE	AL	155	668	554	100	159	23	4	116	100	3	72	10	4		27	5	7	.287	.405	.543	.948	*5/H
9	Jose Abreu (RoY-1st)	27	36	2014	CHW	AL	145	622	556	80	176	35	2	107	51	15	131	11	0	4	14	3	1	.317	.383	.581	.964	*3D/H

Pete Alonso is number three. His next big milestone will be setting the Met team record.

Pete Alonso will be 4th Met to hit 40 home runs. Thursday, August 15, 2019