Darko Milicic is the youngest with more than 0 championships in a season. He was 18 years old in his rookie season in 2003-04.

Interpreted as:

youngest player to win a ring in a regular season

	NAME	AGE	CHAMPS	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
1	Darko Milicic D. Milicic	18	1	2003-04	DET	34	4.7	1.4	1.3	0.2	0.2	0.4	0.5	1.9	26.2	0.0	0.0	0.0	0.4	0.7	58.3	31.8	0.3	0.9	0.4	159	48	43	7	7	15	13	33	-45
2	Jordan Walsh J. Walsh	19	1	2023-24	BOS	9	9.2	1.7	2.2	0.6	0.6	0.1	0.7	1.7	40.0	0.2	1.0	22.2	0.1	0.2	50.0	47.2	0.6	1.7	0.3	83	15	20	5	5	1	3	11	+47
3	Moses Moody M. Moody	19	1	2021-22	GSW	52	11.7	4.4	1.5	0.4	0.1	0.2	1.5	3.5	43.7	0.8	2.1	36.4	0.5	0.7	77.8	57.3	0.3	1.2	0.3	607	228	80	23	7	10	13	43	-42
4	Jonathan Kuminga J. Kuminga	19	1	2021-22	GSW	70	16.9	9.3	3.3	0.9	0.4	0.3	3.4	6.6	51.3	0.7	2.1	33.6	1.9	2.7	68.4	60.0	0.8	2.6	1.1	1,185	652	234	64	31	22	74	146	+35
5	Talen Horton-Tucker T. Horton-Tucker	19	1	2019-20	LAL	6	13.5	5.7	1.2	1.0	1.3	0.2	2.3	5.0	46.7	0.7	2.2	30.8	0.3	0.7	50.0	53.5	0.3	0.8	1.0	81	34	7	6	8	1	6	10	-19
6	Peyton Watson P. Watson	20	1	2022-23	DEN	23	8.1	3.3	1.6	0.5	0.1	0.5	1.3	2.6	49.2	0.3	0.6	42.9	0.5	0.9	55.0	55.3	0.3	1.3	0.3	186	75	37	11	2	11	8	14	-47
7	Tony Parker T. Parker	20	1	2002-03	SAS	82	33.8	15.5	2.6	5.3	0.9	0.0	5.9	12.7	46.4	1.0	3.0	33.7	2.7	3.5	75.5	54.2	0.4	2.2	2.4	2,774	1,269	216	432	71	4	198	174	+450
8	Magic Johnson M. Johnson	20	1	1979-80	LAL	77	36.3	18.0	7.7	7.3	2.4	0.5	6.5	12.3	53.0	0.1	0.4	22.6	4.9	6.0	81.0	60.2	2.2	5.6	4.0	2,795	1,387	596	563	187	41	305	218
9	Jaden Springer J. Springer	21	1	2023-24	TOT	49	10.3	3.3	1.6	0.9	0.7	0.3	1.2	3.0	39.9	0.2	1.0	20.8	0.7	0.9	83.3	49.0	0.7	0.9	0.7	507	163	78	44	36	15	34	66	-28
10	Christian Braun C. Braun	21	1	2022-23	DEN	76	15.5	4.7	2.4	0.8	0.5	0.2	1.9	3.8	49.5	0.4	1.3	35.4	0.5	0.8	62.5	56.8	0.6	1.8	0.5	1,181	360	181	59	41	17	35	101	-114
11	Kevon Looney K. Looney	21	1	2017-18	GSW	66	13.8	4.0	3.3	0.6	0.5	0.8	1.7	2.9	58.0	0.0	0.1	20.0	0.6	1.2	54.5	58.8	1.3	2.0	0.5	910	267	215	42	34	56	31	106	+122
12	Damian Jones D. Jones	21	1	2016-17	GSW	10	8.5	1.9	2.3	0.0	0.1	0.4	0.8	1.6	50.0	0.0	0.0		0.3	1.0	30.0	46.6	0.9	1.4	0.6	85	19	23	0	1	4	6	15	-28
13	Patrick McCaw P. McCaw	21	1	2016-17	GSW	71	15.1	4.0	1.4	1.1	0.5	0.2	1.5	3.5	43.3	0.6	1.7	33.3	0.4	0.5	78.4	54.0	0.3	1.1	0.5	1,074	282	100	77	32	15	36	62	-44
14	Andrew Bynum A. Bynum	21	1	2008-09	LAL	50	28.9	14.3	8.0	1.4	0.4	1.8	5.6	10.0	56.0	0.0	0.0		3.0	4.3	70.7	59.8	2.7	5.2	1.7	1,446	714	398	71	18	90	85	157	+235
15	Rajon Rondo R. Rondo	21	1	2007-08	BOS	77	29.9	10.6	4.2	5.1	1.7	0.2	4.6	9.3	49.2	0.1	0.2	26.3	1.4	2.3	61.1	51.5	1.0	3.2	1.9	2,306	814	322	393	129	13	147	187	+612
16	Kobe Bryant K. Bryant	21	1	1999-00	LAL	66	38.2	22.5	6.3	4.9	1.6	0.9	8.4	17.9	46.8	0.7	2.2	31.9	5.0	6.1	82.1	54.6	1.6	4.7	2.8	2,524	1,485	416	323	106	62	182	220	+531
17	Phil Walker P. Walker	21	1	1977-78	WAS	40	9.6	4.5	1.3	1.4	0.4	0.1	1.4	4.0	35.4				1.6	2.4	66.7	43.8	0.5	0.8	1.6	384	178	52	54	14	5	62	39
18	Johnny Davis J. Davis	21	1	1976-77	POR	79	18.4	8.0	1.6	1.9	0.5	0.1	3.0	6.7	44.1				2.1	2.6	79.4	50.9	0.8	0.8		1,451	634	126	148	41	11		128
19	Jamaal Wilkes J. Wilkes	21	1	1974-75	GSW	82	30.7	14.2	8.2	2.2	1.3	0.3	6.1	13.8	44.2				2.0	2.7	73.4	47.3	2.5	5.7		2,515	1,164	671	183	107	22		222
20	Rick Weitzman R. Weitzman	21	1	1967-68	BOS	25	3.0	1.3	0.4	0.3			0.5	1.8	26.1				0.4	0.5	69.2	31.9				75	33	10	8				8
21	Vern Mikkelsen V. Mikkelsen	21	1	1949-50	MIN	68		11.6		1.8			4.2	10.6	39.9				3.2	4.2	75.2	46.6					791		123				222
22	Carl Meinhold C. Meinhold	21	1	1947-48	BAL	48		5.3		0.3			2.3	7.4	30.3				0.8	1.3	61.7	33.1					253		16				64
23	Zeke Nnaji Z. Nnaji	22	1	2022-23	DEN	53	13.7	5.2	2.6	0.3	0.3	0.4	2.1	3.7	56.1	0.3	1.2	26.2	0.8	1.2	64.5	62.0	1.2	1.4	0.6	728	277	138	18	17	23	31	105	-97
24	Jordan Poole J. Poole	22	1	2021-22	GSW	76	30.0	18.5	3.4	4.0	0.8	0.3	6.2	13.9	44.8	2.8	7.6	36.4	3.2	3.5	92.5	59.8	0.4	3.0	2.5	2,283	1,405	260	304	60	23	187	206	+324
25	Jordan Nwora J. Nwora	22	1	2020-21	MIL	30	9.1	5.7	2.0	0.2	0.6	0.3	2.1	4.5	45.9	0.9	2.1	45.2	0.6	0.8	76.0	58.6	0.3	1.7	0.8	274	171	60	7	17	8	24	22	-3