Trae Young has averaged the most career turnovers per game with 4.2 per game.

Interpreted as:

NBA player most career turnovers per game with a minimum of 400 games played

NAME	GP	TPG	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Trae Young	407	4.2	34.1	25.5	3.6	9.5	1.0	0.2	8.1	18.6	43.6	2.6	7.3	35.5	6.7	7.7	87.3	13,882	10,379	1,451	3,868	414	62	1,696	696	-155
Luka Doncic	400	4.0	34.9	28.7	8.7	8.3	1.2	0.5	9.7	20.7	47.0	3.0	8.6	34.7	6.2	8.3	74.7	13,943	11,470	3,472	3,317	467	182	1,598	902	+892
Russell Westbrook	1,162	3.9	33.6	21.7	7.1	8.1	1.6	0.3	7.8	17.8	43.8	1.1	3.6	30.4	5.0	6.5	77.6	39,080	25,211	8,307	9,468	1,849	369	4,587	2,969	+3061
Magic Johnson	906	3.9	36.7	19.5	7.2	11.2	1.9	0.4	6.9	13.2	52.0	0.4	1.2	30.3	5.5	6.5	84.8	33,245	17,707	6,559	10,141	1,724	374	3,506	2,050
Isiah Thomas	979	3.8	36.3	19.2	3.6	9.3	1.9	0.3	7.3	16.2	45.2	0.4	1.4	29.0	4.1	5.4	75.9	35,516	18,822	3,478	9,061	1,861	249	3,682	2,971
John Wall	647	3.7	34.9	18.7	4.2	8.9	1.6	0.7	6.8	15.7	43.0	1.0	3.1	32.2	4.2	5.4	77.6	22,588	12,088	2,704	5,735	1,045	439	2,412	1,394	-125
James Harden	1,072	3.7	34.7	24.1	5.6	7.1	1.5	0.6	7.1	16.2	44.1	2.7	7.5	36.4	7.1	8.3	86.1	37,222	25,885	6,017	7,629	1,597	600	3,919	2,695	+4262
Allen Iverson	914	3.6	41.1	26.7	3.7	6.2	2.2	0.2	9.3	21.8	42.5	1.2	3.7	31.3	7.0	8.9	78.0	37,584	24,368	3,394	5,624	1,983	164	3,262	1,777	+799
Steve Francis	576	3.5	37.6	18.1	5.6	6.0	1.5	0.4	6.2	14.4	42.9	1.0	2.9	34.1	4.8	6.1	79.7	21,632	10,446	3,215	3,473	846	223	2,030	1,813	+51
LeBron James	1,492	3.5	37.9	27.1	7.5	7.4	1.5	0.7	9.9	19.6	50.6	1.6	4.6	34.8	5.6	7.6	73.6	56,598	40,474	11,185	11,009	2,275	1,111	5,211	2,682	+7443
Joel Embiid	433	3.4	32.0	27.9	11.2	3.6	0.9	1.7	9.2	18.2	50.4	1.2	3.4	34.1	8.3	10.1	82.6	13,835	12,071	4,832	1,573	397	720	1,485	1,327	+2547
Reggie Theus	1,026	3.4	33.7	18.5	3.3	6.3	1.2	0.2	6.9	14.6	47.1	0.3	1.0	25.2	4.5	5.5	82.6	34,603	19,015	3,349	6,453	1,206	236	3,493	3,008
Micheal Ray Richardson	556	3.3	33.4	14.8	5.5	7.0	2.6	0.4	6.1	13.5	45.7	0.3	1.2	22.0	2.3	3.4	69.0	18,589	8,253	3,056	3,899	1,463	206	1,854	1,859
DeMarcus Cousins	654	3.3	29.8	19.6	10.2	3.0	1.3	1.1	7.0	15.2	46.0	0.7	2.0	33.1	5.0	6.7	73.7	19,509	12,802	6,664	1,979	874	742	2,149	2,421	-553
Ray Williams	655	3.2	28.2	15.5	3.6	5.8	1.8	0.3	6.0	13.4	45.1	0.2	0.8	23.7	3.3	4.1	80.2	18,462	10,158	2,370	3,779	1,198	208	2,099	2,165
Bernard King	874	3.2	33.7	22.5	5.8	3.3	1.0	0.3	9.0	17.3	51.8	0.0	0.2	17.2	4.5	6.2	73.0	29,417	19,655	5,060	2,863	866	230	2,791	2,885
Kevin Durant	1,061	3.2	36.7	27.3	7.0	4.4	1.1	1.1	9.4	18.7	50.1	1.9	4.9	38.7	6.6	7.5	88.4	38,972	28,924	7,454	4,645	1,123	1,196	3,363	2,033	+4774
Gilbert Arenas	552	3.2	35.1	20.7	3.9	5.3	1.6	0.2	6.7	16.0	42.1	2.0	5.6	35.1	5.2	6.5	80.3	19,351	11,402	2,168	2,909	884	134	1,744	1,683	+24
Dwyane Wade	1,054	3.2	33.9	22.0	4.7	5.4	1.5	0.8	8.0	16.7	48.0	0.5	1.8	29.3	5.4	7.1	76.5	35,773	23,165	4,933	5,701	1,620	885	3,326	2,328	+2827
Charles Barkley	1,073	3.1	36.7	22.1	11.7	3.9	1.5	0.8	7.9	14.5	54.1	0.5	1.9	26.6	5.9	8.1	73.5	39,330	23,757	12,546	4,215	1,648	888	3,376	3,287	+532
Larry Bird	897	3.1	38.4	24.3	10.0	6.3	1.7	0.8	9.6	19.3	49.6	0.7	1.9	37.6	4.4	5.0	88.6	34,443	21,791	8,974	5,695	1,556	755	2,816	2,279
Stephen Curry	956	3.1	34.2	24.8	4.7	6.4	1.5	0.2	8.5	17.9	47.3	3.9	9.2	42.6	3.9	4.3	91.0	32,724	23,668	4,509	6,119	1,473	235	2,987	2,215	+5878
Glenn Robinson	688	3.1	36.8	20.7	6.1	2.7	1.2	0.6	8.1	17.6	45.9	0.9	2.6	34.0	3.6	4.4	82.0	25,346	14,234	4,189	1,879	826	389	2,147	1,847	+10
Norm Nixon	768	3.1	35.5	15.7	2.6	8.3	1.5	0.1	6.8	14.1	48.3	0.2	0.6	29.4	2.0	2.6	77.2	27,250	12,065	1,991	6,386	1,187	71	2,368	1,983
Julius Erving	754	3.1	34.1	22.0	6.5	3.9	1.8	1.6	8.7	17.1	50.8	0.1	0.3	26.1	4.6	5.9	77.7	25,737	16,594	4,906	2,918	1,349	1,180	2,323	2,035