Tobias Harris had his highest three-point percentage in a season in 2017-18, at 41.1 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	+/-
Tobias Harris	2017-18	TOT	80	41.1	33.4	18.6	5.5	2.4	0.9	0.4	1.3	7.0	15.3	46.0	2.3	5.6	2.2	2.7	82.9	2,668	1,486	437	192	71	35	105	164	-113
Tobias Harris	2018-19	TOT	82	39.7	34.7	20.0	7.9	2.8	0.6	0.5	1.8	7.5	15.3	48.7	1.9	4.8	3.2	3.7	86.6	2,848	1,644	645	229	51	37	151	184	+16
Tobias Harris	2020-21	PHI	62	39.4	32.5	19.5	6.8	3.5	0.9	0.8	1.7	7.6	14.9	51.2	1.3	3.4	2.9	3.3	89.2	2,014	1,210	419	220	55	51	107	119	+322
Tobias Harris	2021-22	PHI	73	36.7	34.8	17.2	6.8	3.5	0.6	0.6	1.6	6.8	14.0	48.2	1.4	3.8	2.3	2.8	84.2	2,543	1,257	496	252	47	43	116	164	+172
Tobias Harris	2019-20	PHI	72	36.7	34.3	19.6	6.9	3.2	0.7	0.6	1.4	7.7	16.3	47.1	1.8	5.0	2.4	3.0	80.6	2,469	1,411	495	227	53	40	104	165	+160
Tobias Harris	2014-15	ORL	68	36.4	34.8	17.1	6.3	1.8	1.0	0.5	1.7	6.5	14.0	46.6	1.3	3.5	2.8	3.6	78.8	2,369	1,164	430	124	69	36	115	134	-294
Tobias Harris	2016-17	DET	82	34.7	31.3	16.1	5.1	1.7	0.7	0.5	1.2	6.2	13.0	48.1	1.3	3.8	2.3	2.8	84.1	2,566	1,321	416	142	60	39	96	133	+2
Tobias Harris	2015-16	TOT	76	33.5	33.1	14.7	6.7	2.2	0.9	0.5	1.4	5.5	11.7	46.9	1.1	3.1	2.7	3.2	83.1	2,513	1,116	510	169	65	40	108	153	+21
Tobias Harris	2012-13	TOT	55	31.5	23.6	11.0	5.2	1.3	0.6	0.8	1.2	4.2	9.3	45.5	0.6	2.0	1.9	2.5	75.2	1,299	603	287	69	32	44	66	120	-171
Tobias Harris	2011-12	MIL	42	26.1	11.4	5.0	2.4	0.5	0.3	0.2	0.7	1.9	4.0	46.7	0.1	0.5	1.0	1.3	81.5	479	208	101	22	13	7	31	45	+5
Tobias Harris	2013-14	ORL	61	25.4	30.3	14.6	7.0	1.3	0.7	0.4	1.3	5.4	11.7	46.4	0.5	2.1	3.2	4.0	80.7	1,850	893	424	82	41	24	78	143	-231

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