Mark Jackson had the most games with a three-point percentage below 20.0, with 494 games.

Interpreted as:

most all-time regular-season games <20 3p% 10 3pa by a player

NAME	GP	3P%	3PA	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Mark Jackson	494	1.0	831	30.4	8.2	3.8	8.0	1.3	0.1	2.4	3.3	8.6	38.0	0.0	1.6	2.1	77.1	15,012	4,047	1,888	3,929	649	43	1,188	861	-87
John Stockton	452	0.6	715	32.9	12.3	2.9	10.8	2.2	0.2	2.9	4.5	9.9	45.8	0.0	3.3	3.9	82.7	14,861	5,571	1,296	4,898	987	99	1,309	1,230	+642
Andre Iguodala	442	1.6	970	31.3	8.5	4.7	4.1	1.5	0.5	1.8	3.2	8.3	38.1	0.0	2.2	3.2	68.7	13,852	3,774	2,074	1,793	656	222	777	778	+69
Gary Payton	441	3.3	1,071	35.1	14.4	3.9	6.6	1.7	0.2	2.3	6.0	14.3	41.8	0.1	2.4	3.3	73.5	15,462	6,347	1,718	2,906	746	86	997	1,047	+100
DeMar DeRozan	440	0.8	737	35.6	20.9	4.5	4.2	1.0	0.3	2.1	7.5	17.1	43.8	0.0	6.0	7.0	84.7	15,654	9,205	1,991	1,829	452	137	943	1,020	-340
Tony Parker	439	0.3	662	30.9	14.5	2.7	5.5	0.8	0.1	2.3	5.9	13.0	45.2	0.0	2.7	3.6	75.1	13,560	6,347	1,201	2,432	351	42	992	720	+1127
Vince Carter	437	4.2	1,266	28.3	12.4	4.0	2.8	0.9	0.5	1.7	4.6	12.6	36.3	0.1	3.2	3.9	80.2	12,351	5,438	1,744	1,244	373	219	743	1,068	-1061
Russell Westbrook	435	4.4	1,238	33.0	18.8	6.9	7.8	1.5	0.3	3.7	6.9	17.1	40.8	0.1	4.8	6.3	76.7	14,355	8,189	3,015	3,414	671	149	1,625	1,102	+479
Dirk Nowitzki	435	3.9	1,167	33.2	17.4	7.5	2.3	0.7	0.8	1.6	6.2	15.1	40.9	0.1	4.9	5.6	87.5	14,432	7,575	3,258	1,011	318	350	716	1,038	+368
Charles Barkley	433	1.0	828	37.3	21.4	12.1	4.1	1.5	0.8	3.1	7.7	15.2	50.8	0.0	6.0	8.1	73.4	16,163	9,274	5,221	1,795	668	359	1,335	1,288	+62
Kobe Bryant	428	3.8	1,234	35.3	21.1	5.2	4.7	1.3	0.5	2.9	7.5	18.4	40.7	0.1	6.0	7.1	84.1	15,087	9,027	2,238	1,997	568	210	1,261	1,060	+587
Andre Miller	422	0.0	555	32.7	13.1	4.0	7.0	1.3	0.2	2.5	4.8	11.3	42.8	0.0	3.5	4.3	80.4	13,811	5,548	1,683	2,971	566	85	1,052	970	+269
Ron Harper	422	0.9	705	30.8	12.3	4.3	3.9	1.7	0.7	2.2	4.8	11.6	41.0	0.0	2.7	3.8	72.3	13,015	5,175	1,807	1,633	736	315	917	952	+323
Jeff Green	418	2.5	957	25.8	8.6	3.8	1.3	0.6	0.4	1.2	3.2	8.7	37.3	0.1	2.1	2.6	79.8	10,767	3,613	1,570	560	249	185	493	824	-1770
LeBron James	416	5.0	1,385	37.8	23.5	7.5	7.4	1.6	0.7	3.4	8.7	18.9	46.1	0.2	5.9	7.9	74.2	15,743	9,774	3,118	3,069	681	307	1,431	724	+1511
Robert Horry	415	1.4	720	23.4	4.7	4.7	1.9	1.1	0.9	1.2	1.7	5.5	31.9	0.0	1.2	1.7	73.3	9,726	1,967	1,942	799	456	383	504	997	+549
Scottie Pippen	404	3.4	894	35.1	13.9	6.4	5.3	1.9	0.8	2.8	5.6	13.1	42.4	0.1	2.7	3.9	70.7	14,193	5,621	2,570	2,145	763	312	1,131	1,138	+321
Jason Kidd	402	4.8	1,305	36.0	9.5	6.5	8.7	2.0	0.3	2.8	3.4	10.7	32.1	0.2	2.4	3.1	77.7	14,482	3,803	2,597	3,495	784	115	1,141	755	+264
Dwyane Wade	399	1.0	692	33.9	20.5	4.5	5.5	1.6	0.9	3.2	7.6	16.8	45.0	0.0	5.4	7.0	76.4	13,523	8,188	1,808	2,187	649	340	1,267	853	+680
Michael Jordan	397	0.9	667	39.0	29.7	6.3	5.2	2.4	0.8	2.7	11.3	23.7	47.7	0.0	7.1	8.6	82.9	15,464	11,808	2,483	2,073	951	298	1,087	1,084	+420
Clifford Robinson	392	2.2	810	29.7	11.4	4.5	2.1	1.0	1.0	1.7	4.5	11.6	38.8	0.0	2.4	3.5	68.4	11,632	4,467	1,779	807	406	405	679	1,145	-298
Rudy Gay	390	2.5	926	29.3	12.5	5.5	1.9	1.1	0.6	1.9	4.9	12.3	39.7	0.1	2.7	3.4	78.7	11,444	4,867	2,140	754	410	242	748	844	-676
Carmelo Anthony	390	3.5	1,072	34.7	20.4	6.4	2.8	0.9	0.4	2.6	7.4	18.0	41.2	0.1	5.4	6.7	80.8	13,517	7,951	2,502	1,092	370	173	1,022	1,101	-221
Johnny Newman	389	0.6	617	24.8	9.9	2.4	1.4	0.9	0.2	1.5	3.5	8.6	41.0	0.0	2.8	3.5	80.6	9,664	3,846	915	557	345	76	579	1,092	-597
Derek Fisher	387	1.5	780	24.5	5.5	2.0	3.0	1.0	0.1	1.0	2.0	6.7	29.2	0.0	1.6	2.0	81.1	9,468	2,146	758	1,176	391	30	395	788	+701