Jacob Evans has the highest career usage percentage in the NBA Finals, at 74.9 percent.

Interpreted as:

highest usage by a player single NBA finals

	NAME	USG%	SERIES	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	Jacob Evans J. Evans	74.9	NBA Finals	3	0.6	0.0	0.0	0.0	0.0	0.0	0.0	1.0	0.0	0.0	0.3	0.0	0.0	0.0		0.0	0.0	0.0	0.0	2	0	0	0	0	0	0	0	-1
2	Thanasis Antetokounmpo T. Antetokounmpo	56.1	NBA Finals	1	1.6	0.0	3.0	0.0	0.0	0.0	0.0	2.0	0.0	0.0	0.0		0.0	0.0		0.0	1.0	2.0	0.0	2	0	3	0	0	0	0	1	+1
3	Terry Duerod T. Duerod	51.2	NBA Finals	4	1.5	1.5	0.0	0.0	0.3	0.0	0.8	1.8	42.9	0.0	0.3	0.0	0.0	0.0		42.9	0.0	0.0	0.0	6	6	0	0	1	0	0	0
4	Ira Newble I. Newble	50.0	NBA Finals	1	0.9	0.0	1.0	0.0	0.0	0.0	0.0	1.0	0.0	0.0	1.0	0.0	0.0	0.0		0.0	0.0	1.0	0.0	1	0	1	0	0	0	0	0	0
5	Mitch Richmond M. Richmond	49.9	NBA Finals	1	1.0	2.0	0.0	0.0	0.0	0.0	1.0	1.0	100.0	0.0	0.0		0.0	0.0		100.0	0.0	0.0	0.0	1	2	0	0	0	0	0	0	-3
6	Steve Smith S. Smith	46.2	NBA Finals	1	1.0	0.0	0.0	0.0	0.0	0.0	0.0	1.0	0.0	0.0	1.0	0.0	0.0	0.0		0.0	0.0	0.0	0.0	1	0	0	0	0	0	0	0	0
7	Chuck Nevitt C. Nevitt	39.4	NBA Finals	2	1.5	1.5	1.0	0.0	0.5	0.5	0.5	1.0	50.0	0.0	0.0		0.5	1.0	50.0	52.1	1.0	0.0	0.0	3	3	2	0	1	1	0	1
8	Luka Dončić L. Dončić	38.6	NBA Finals	5	38.8	29.2	8.8	5.6	2.6	0.0	11.8	25.0	47.2	2.2	9.0	24.4	3.4	5.8	58.6	53.0	0.0	8.8	4.6	194	146	44	28	13	0	23	14	+7
9	Jonathan Bender J. Bender	38.5	NBA Finals	2	3.0	3.5	0.5	0.0	0.5	0.0	1.0	1.5	66.7	0.0	0.0		1.5	2.0	75.0	73.5	0.0	0.5	0.0	6	7	1	0	1	0	0	0	+5
10	Craig Ehlo C. Ehlo	37.6	NBA Finals	4	2.5	3.0	0.5	0.3	0.5	0.3	1.3	1.8	71.4	0.0	0.0		0.5	0.8	66.7	72.1	0.3	0.3	0.3	10	12	2	1	2	1	1	0
11	Allen Iverson A. Iverson	37.4	NBA Finals	5	47.4	35.6	5.6	3.8	1.8	0.2	13.2	32.4	40.7	2.2	7.8	28.2	7.0	9.6	72.9	48.6	1.0	4.6	2.4	237	178	28	19	9	1	12	12	-25
12	Michael Jordan M. Jordan	36.1	NBA Finals	35	43.0	33.6	6.0	6.0	1.8	0.7	12.5	26.0	48.1	1.2	3.3	36.8	7.4	9.1	80.6	55.9	1.6	4.4	2.8	1,506	1,176	211	209	62	23	99	103	+45
13	Adrian Branch A. Branch	35.6	NBA Finals	4	2.5	1.3	0.8	0.3	0.3	0.0	0.3	1.5	16.7	0.0	0.3	0.0	0.8	1.5	50.0	28.9	0.0	0.8	0.0	10	5	3	1	1	0	0	3
14	Ty-Shon Alexander T. Alexander	35.5	NBA Finals	1	1.3	2.0	0.0	0.0	0.0	0.0	1.0	1.0	100.0	0.0	0.0		0.0	0.0		100.0	0.0	0.0	0.0	1	2	0	0	0	0	0	0	-1
15	Walker Russell W. Russell	34.7	NBA Finals	3	1.7	1.3	0.0	0.0	0.0	0.0	0.3	1.0	33.3	0.0	0.0		0.7	0.7	100.0	51.5	0.0	0.0	0.0	5	4	0	0	0	0	0	1
16	Marreese Speights M. Speights	34.1	NBA Finals	10	4.9	2.3	1.4	0.3	0.2	0.2	0.8	3.1	25.8	0.4	1.0	40.0	0.3	0.4	75.0	35.1	0.6	0.8	0.3	49	23	14	3	2	2	3	9	+15
17	Jordan Nwora J. Nwora	33.4	NBA Finals	1	1.3	3.0	1.0	0.0	0.0	0.0	1.0	1.0	100.0	1.0	1.0	100.0	0.0	0.0		150.0	0.0	1.0	0.0	1	3	1	0	0	0	0	0	+1
18	Devin Booker D. Booker	33.3	NBA Finals	6	40.2	28.2	3.5	4.0	0.8	0.3	10.8	23.8	45.5	1.8	6.8	26.8	4.7	5.3	87.5	53.8	1.0	2.5	3.2	241	169	21	24	5	2	19	23	+12
19	Conner Henry C. Henry	33.2	NBA Finals	4	3.8	2.5	0.8	0.0	0.0	0.0	1.0	2.3	44.4	0.0	0.8	0.0	0.5	1.0	50.0	46.5	0.3	0.5	0.3	15	10	3	0	0	0	1	1
20	Reggie Jackson R. Jackson	33.1	NBA Finals	1	1.4	0.0	1.0	1.0	0.0	0.0	0.0	1.0	0.0	0.0	1.0	0.0	0.0	0.0		0.0	0.0	1.0	0.0	1	0	1	1	0	0	0	0	-2
21	DeJuan Blair D. Blair	33.0	NBA Finals	3	5.8	3.7	2.7	0.3	0.7	0.0	1.7	3.7	45.5	0.0	0.0		0.3	1.0	33.3	44.6	0.7	2.0	0.0	17	11	8	1	2	0	0	1	+9
22	Russell Westbrook R. Westbrook	32.5	NBA Finals	5	42.3	27.0	6.4	6.6	1.0	0.4	10.4	24.0	43.3	0.6	4.4	13.6	5.6	6.8	82.4	50.0	0.8	5.6	2.2	211	135	32	33	5	2	11	12	-17
23	Latrell Sprewell L. Sprewell	32.3	NBA Finals	5	44.2	26.0	6.6	2.6	1.4	0.2	9.6	23.4	41.0	0.4	1.4	28.6	6.4	7.6	84.2	48.6	1.2	5.4	2.8	221	130	33	13	7	1	14	7	-27
24	David Rivers D. Rivers	32.1	NBA Finals	3	8.7	4.0	1.0	1.7	0.0	0.0	1.3	4.0	33.3	0.0	0.7	0.0	1.3	1.7	80.0	42.3	0.0	1.0	1.3	26	12	3	5	0	0	4	6
25	Franklin Edwards F. Edwards	32.1	NBA Finals	4	1.5	2.0	0.3	0.0	0.0	0.0	0.8	1.0	75.0	0.0	0.0		0.5	0.5	100.0	82.0	0.3	0.0	0.0	6	8	1	0	0	0	0	0