Allen Crabbe had his best three-point percentage in a season in 2016-17, at 44.4 percent.

NAME	SEASON	TM	GP	3P%	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Allen Crabbe	2016-17	POR	79	44.4	28.5	10.7	2.9	1.2	0.7	0.3	0.8	3.8	8.2	46.8	1.7	3.8	1.3	1.6	84.7	2,254	845	226	94	54	20	62	171	-118
Allen Crabbe	2013-14	POR	15	42.9	6.7	2.2	0.6	0.4	0.1	0.1	0.2	0.8	2.2	36.4	0.4	0.9	0.2	0.3	75.0	100	33	9	6	2	1	3	10	+2
Allen Crabbe	2015-16	POR	81	39.3	26.0	10.3	2.7	1.2	0.8	0.2	0.8	3.8	8.4	45.9	1.4	3.5	1.2	1.4	86.7	2,105	832	216	99	63	16	64	192	+43
Allen Crabbe	2018-19	BKN	43	37.8	26.3	9.6	3.4	1.1	0.5	0.3	1.1	3.2	8.7	36.7	2.3	6.0	1.0	1.3	73.2	1,133	413	148	46	23	13	46	102	+4
Allen Crabbe	2017-18	BKN	75	37.8	29.3	13.2	4.3	1.6	0.6	0.5	1.0	4.5	11.0	40.7	2.7	7.1	1.5	1.8	85.2	2,197	990	324	117	47	35	78	168	-85
Allen Crabbe	2014-15	POR	51	35.3	13.4	3.3	1.4	0.8	0.4	0.3	0.3	1.2	3.0	41.2	0.6	1.7	0.2	0.3	75.0	683	168	73	39	19	15	15	74	-25
Allen Crabbe	2019-20	TOT	37	30.3	17.6	4.6	2.1	0.9	0.4	0.1	0.5	1.7	4.8	35.6	1.0	3.2	0.3	0.4	71.4	653	172	77	33	15	4	17	47	-221

StatMuse has season-level data for three-point percentage going back to the 1979-80 season.