Pete Alonso has hit the most homers when playing 7 or fewer seasons, with 264 homers.

Interpreted as:

most home runs by a player hit in 7 years only

	NAME	HR	SEAS	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	Pete Alonso P. Alonso	264	7	1,008	3,763	580	951	183	8	712	419	100	984	18	4	4,316	1,942	455	0	34	47	108	.253	.341	.516	.857	680	162.2	.360	133	174.5
2	Vladimir Guerrero Jr. V. Guerrero Jr.	183	7	975	3,734	571	1,077	211	6	591	430	36	645	26	13	4,220	1,849	400	0	20	39	125	.288	.366	.495	.861	688	181.9	.367	137	184.5
3	Yordan Alvarez Y. Alvarez	170	7	677	2,455	429	728	156	6	493	346	40	566	9	2	2,867	1,406	332	0	26	42	60	.297	.389	.573	.961	549	206.4	.402	163	212.4
4	Austin Riley A. Riley	169	7	821	3,144	480	850	168	11	483	264	52	911	7	5	3,489	1,547	348	0	29	12	66	.270	.334	.492	.826	523	105.6	.352	121	90.2
5	Cal Raleigh C. Raleigh	153	5	623	2,164	313	489	95	2	376	266	19	696	21	5	2,465	1,047	250	0	16	22	27	.226	.314	.484	.798	343	51.5	.339	125	71.2
6	Fernando Tatis Jr. F. Tatis Jr.	152	6	671	2,603	476	721	136	12	393	293	28	690	124	27	2,939	1,337	300	1	14	15	46	.277	.355	.514	.868	484	128.3	.368	137	135.1
7	Adolis García A. García	141	7	766	2,851	402	675	145	7	459	211	28	875	74	21	3,119	1,257	293	0	29	5	57	.237	.293	.441	.734	373	2.9	.314	101	3.3
8	Evan Gattis E. Gattis	139	6	706	2,443	299	605	116	12	410	167	26	575	3	3	2,662	1,162	267	0	26	18	67	.248	.300	.476	.775	334	30.2	.329	110	30.8
9	Bryan Reynolds B. Reynolds	138	7	948	3,560	500	966	195	29	484	365	53	905	41	13	3,999	1,633	362	0	21	21	69	.271	.346	.459	.805	582	102.8	.346	117	84.9
10	Yasiel Puig Y. Puig	132	7	861	3,015	441	834	159	21	415	297	43	681	79	38	3,376	1,431	312	2	19	21	73	.277	.348	.475	.823	491	98	.352	124	92.8
11	Trey Mancini T. Mancini	129	7	831	3,051	407	801	156	11	400	265	41	795	2	1	3,380	1,366	296	0	23	12	87	.263	.328	.448	.775	450	43.6	.331	109	36.7
12	Will Smith W. Smith	128	7	722	2,508	413	661	128	10	442	330	64	554	12	4	2,946	1,193	266	0	44	19	50	.264	.358	.476	.834	455	103.2	.357	129	103.3
13	Mike Yastrzemski M. Yastrzemski	123	7	840	2,751	433	654	162	23	364	329	32	765	25	12	3,139	1,231	308	8	19	15	29	.238	.324	.447	.772	419	43.1	.331	111	44.7
14	Zeke Bonura Z. Bonura	119	7	917	3,582	600	1,099	232	29	704	404	17	180	19		4,026	1,746	380	23			40	.307	.380	.487	.867	675	170	.394	119	110.3
15	Randy Arozarena R. Arozarena	118	7	801	2,912	452	729	160	10	390	327	98	868	131	49	3,359	1,263	288	0	22	9	54	.250	.344	.434	.777	469	70.3	.339	124	93.6
16	Don Hurst D. Hurst	115	7	905	3,275	510	976	190	28	610	391	15	210	41		3,762	1,567	333	81				.298	.375	.478	.854	615	139.9	.387	113	65.8
17	Julio Rodríguez J. Rodríguez	112	4	590	2,384	368	654	110	9	341	169	37	628	116	28	2,597	1,118	231	0	7	16	46	.274	.331	.469	.800	370	63.5	.343	128	84.9
18	Bo Bichette B. Bichette	111	7	748	3,075	438	904	190	8	437	187	17	639	60	21	3,292	1,443	309	0	13	4	78	.294	.337	.469	.806	479	86	.346	122	87.4
19	Brent Rooker B. Rooker	109	6	525	1,875	265	486	99	6	293	191	32	590	21	4	2,108	924	214	0	10	9	32	.259	.336	.493	.829	320	69.4	.354	132	77.7
20	Jazz Chisholm Jr. J. Chisholm Jr.	108	6	579	2,109	316	522	79	16	308	197	20	648	130	36	2,344	957	203	4	14	6	16	.248	.316	.454	.770	311	32.2	.330	110	25.5
21	Franmil Reyes F. Reyes	108	6	548	1,881	237	468	73	4	285	172	5	635	6	2	2,078	873	185	0	20	4	54	.249	.310	.464	.775	273	22.4	.328	108	22.9
22	Shea Hillenbrand S. Hillenbrand	108	7	943	3,570	463	1,014	202	15	490	140	69	464	16	12	3,816	1,570	325	1	36	18	122	.284	.321	.440	.760	464	-4.1	.327	94	-29.4
23	Nathaniel Lowe N. Lowe	107	7	839	3,018	398	796	137	13	413	376	19	836	15	2	3,430	1,280	257	0	17	11	66	.264	.347	.424	.771	471	62.5	.336	116	63.7
24	Bobby Witt Jr. B. Witt Jr.	105	4	626	2,491	403	722	151	34	373	176	26	487	148	43	2,722	1,256	290	1	28	20	34	.290	.340	.504	.844	419	98.2	.357	128	87.4
25	Josh Naylor J. Naylor	104	7	745	2,590	334	697	146	2	435	221	23	457	55	9	2,856	1,159	252	0	22	26	71	.269	.329	.447	.777	383	42.4	.332	115	49.6