which rookie has highest playoff free throw percentage of at least 20 attempts

B.J. Armstrong has the highest free-throw percentage by a rookie with 20+ free-throw attempts in a single NBA playoff run, at 91.7 percent in 1989-90.

Interpreted as:

Which rookie has highest playoff free throw percentage of at least 20 free throw attempts?

	NAME	FT%	FTA	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
1	B.J. Armstrong	91.7	24	1989-90	CHI	16	13.6	4.0	1.3	1.8	0.6	0.0	1.3	3.9	33.9	0.0	0.3	0.0	1.4	44.1	0.2	1.1	0.8	217	64	20	29	10	0	12	22
2	Donovan Mitchell D. Mitchell	90.7	43	2017-18	UTA	11	37.4	24.4	5.9	4.2	1.5	0.4	9.3	22.1	42.0	2.3	7.3	31.3	3.5	51.2	0.8	5.1	2.9	411	268	65	46	16	4	32	35	-25
3	Vince Boryla V. Boryla	90.6	32	1949-50	NYK	5		15.0		1.4			4.6	10.4	44.2				5.8	56.7					75		7				25
4	Allen Leavell A. Leavell	90.5	21	1979-80	HOU	7	21.3	5.6	1.7	3.4	0.9	0.0	1.4	5.4	26.3	0.0	0.6	0.0	2.7	41.3	0.3	1.4	0.9	149	39	12	24	6	0	6	12
5	Frankie Brian F. Brian	89.6	48	1949-50	AND	8		11.9		2.4			3.3	12.0	27.1				5.4	40.6					95		19				24
6	Mitch Richmond M. Richmond	89.5	38	1988-89	GSW	8	39.3	20.1	7.3	4.4	1.8	0.1	7.8	16.9	45.9	0.4	2.0	18.8	4.3	53.1	1.3	6.0	3.0	314	161	58	35	14	1	24	25
7	Courtney Lee C. Lee	88.5	26	2008-09	ORL	21	26.2	8.0	1.9	1.3	0.9	0.1	3.2	7.3	43.5	0.6	2.1	27.3	1.1	51.1	0.3	1.6	1.0	550	169	39	27	19	3	20	42	+24
8	Derek Anderson D. Anderson	88.5	26	1997-98	CLE	4	25.8	10.8	2.3	2.8	1.3	0.3	2.5	5.5	45.5	0.0	0.0		5.8	64.3	0.0	2.3	3.0	103	43	9	11	5	1	12	10	-19
9	Ray Williams R. Williams	88.5	26	1977-78	NYK	6	23.3	17.5	2.5	5.2	1.0	0.0	6.8	13.0	52.6				3.8	58.7	1.0	1.5	2.8	140	105	15	31	6	0	17	25
10	Slick Leonard S. Leonard	88.5	26	1956-57	MIN	5	40.8	21.4	6.0	7.6			8.4	20.0	42.0				4.6	48.0				204	107	30	38				15
11	Daniel Gibson D. Gibson	88.4	43	2006-07	CLE	20	20.1	8.3	1.6	1.1	0.6	0.2	2.5	5.8	43.1	1.4	3.3	40.9	1.9	61.1	0.5	1.2	0.5	402	165	32	21	12	4	9	34	+70
12	Buddy Jeannette B. Jeannette	88.1	42	1947-48	BAL	11		8.8		1.1			2.7	5.5	49.2				3.4	61.0					97		12				45
13	Larry Bird L. Bird	88.0	25	1979-80	BOS	9	41.3	21.3	11.2	4.7	1.6	0.9	9.2	19.7	46.9	0.4	1.7	26.7	2.4	51.1	2.4	8.8	3.7	372	192	101	42	14	8	33	30
14	Rodney Stuckey R. Stuckey	87.9	58	2007-08	DET	17	22.4	8.2	1.9	3.4	1.1	0.1	2.5	6.8	37.1	0.1	0.4	28.6	3.0	49.1	0.6	1.2	1.4	380	139	32	58	18	2	23	35	+7
15	Doc Rivers D. Rivers	87.8	41	1983-84	ATL	5	26.0	13.6	2.0	3.2	2.4	0.8	3.2	6.4	50.0	0.0	0.6	0.0	7.2	67.9	1.4	0.6	1.8	130	68	10	16	12	4	9	16
16	Dick Garrett D. Garrett	87.5	32	1969-70	LAL	18	33.1	12.8	2.9	2.2			5.6	11.0	51.0				1.6	54.2				595	230	52	39				68
17	Herm Schaefer H. Schaefer	87.5	32	1948-49	MIN	10		12.4		3.1			4.8	10.4	46.2				2.8	52.5					124		31				22
18	Stan Stutz S. Stutz	87.5	32	1946-47	NYK	5		16.8		1.4			5.6	20.2	27.7				5.6	36.5					84		7				13
19	Sidney Moncrief S. Moncrief	87.1	31	1979-80	MIL	7	26.0	12.4	4.4	1.6	0.7	0.1	4.3	7.3	58.8	0.0	0.0		3.9	67.3	2.4	2.0	2.0	182	87	31	11	5	1	14	14
20	Tyler Herro T. Herro	87.0	54	2019-20	MIA	21	33.6	16.0	5.1	3.7	0.4	0.1	5.7	13.2	43.3	2.3	6.1	37.5	2.2	55.7	0.3	4.8	2.0	706	335	107	77	8	2	42	31	+1
21	Kobe Bryant K. Bryant	86.7	30	1996-97	LAL	9	14.8	8.2	1.2	1.2	0.3	0.2	2.3	6.1	38.2	0.7	2.6	26.1	2.9	54.3	0.1	1.1	1.6	133	74	11	11	3	2	14	23	+1
22	Sam Cassell S. Cassell	86.5	74	1993-94	HOU	22	21.7	9.4	2.7	4.2	1.0	0.2	2.9	7.3	39.4	0.8	2.0	37.8	2.9	53.7	0.9	1.8	2.1	478	207	59	93	21	5	47	62
23	Tom Meschery T. Meschery	86.3	73	1961-62	PHI	12	42.3	20.1	11.5	2.7			7.4	18.7	39.7				5.3	47.0				508	241	138	32				48
24	Harrison Barnes H. Barnes	85.7	35	2012-13	GSW	12	38.4	16.1	6.4	1.3	0.6	0.4	6.0	13.5	44.4	1.6	4.3	36.5	2.5	54.4	1.5	4.9	1.3	461	193	77	15	7	5	16	33	+18
25	Frank Johnson F. Johnson	85.7	28	1981-82	WAS	7	40.0	15.6	3.1	8.4	1.4	0.0	5.7	14.9	38.5	0.7	1.7	41.7	3.4	46.9	1.0	2.1	4.1	280	109	22	59	10	0	29	24