Between the 2009-10 and 2018-19 seasons, Thaddeus Young lost the most games, with 423 losses.

Interpreted as:

most regular-season loses of the 2010s by a player

	NAME	L	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	Thaddeus Young T. Young	423	752	31.3	13.7	6.3	1.8	1.5	0.4	5.9	11.8	49.9	0.5	1.4	32.7	1.4	2.1	66.1	53.6	2.1	4.2	1.5	23,556	10,289	4,710	1,347	1,142	336	1,111	1,691	-431
2	D.J. Augustin	396	735	23.8	9.6	1.9	4.0	0.6	0.0	3.1	7.7	41.2	1.3	3.4	37.6	2.1	2.4	85.9	55.3	0.3	1.6	1.5	17,511	7,078	1,388	2,954	446	27	1,102	1,043	-1134
3	Wayne Ellington W. Ellington	396	645	21.3	8.2	2.2	1.1	0.6	0.1	3.0	7.3	41.0	1.5	3.9	37.9	0.7	0.8	84.6	53.5	0.3	1.9	0.7	13,720	5,278	1,416	711	358	48	438	742	-680
4	Ramon Sessions R. Sessions	388	595	22.7	10.1	2.5	3.7	0.6	0.1	3.4	7.8	43.3	0.3	1.0	32.3	3.0	3.8	79.1	53.3	0.4	2.1	1.7	13,496	6,027	1,513	2,228	372	42	985	758	-1672
5	Courtney Lee C. Lee	377	710	27.7	9.9	2.7	1.8	1.0	0.3	3.8	8.4	45.0	1.1	2.8	38.5	1.2	1.5	85.5	54.8	0.5	2.2	1.0	19,655	7,012	1,917	1,250	715	193	682	1,149	-653
6	Corey Brewer C. Brewer	376	720	23.1	9.1	2.7	1.5	1.3	0.3	3.4	8.0	43.0	0.7	2.4	28.5	1.6	2.2	70.7	50.8	0.7	2.0	1.2	16,623	6,540	1,938	1,112	928	194	846	1,536	-234
7	Anthony Tolliver A. Tolliver	376	645	20.2	6.5	3.4	0.9	0.4	0.3	2.1	5.1	42.1	1.2	3.3	37.9	1.0	1.2	77.6	57.6	0.8	2.7	0.6	13,018	4,182	2,211	589	245	201	418	1,074	-143
8	Brook Lopez B. Lopez	375	635	31.0	17.9	6.3	1.6	0.6	1.7	6.8	13.8	49.5	0.7	2.0	34.8	3.6	4.5	79.1	56.8	2.2	4.2	1.9	19,674	11,346	4,030	1,004	365	1,098	1,188	1,700	-550
9	Robin Lopez R. Lopez	375	706	24.1	9.6	5.6	0.9	0.3	1.3	4.0	7.6	53.1	0.0	0.1	22.0	1.5	2.0	76.0	56.7	2.6	3.0	1.2	17,037	6,754	3,927	634	178	886	826	1,439	-52
10	Jared Dudley J. Dudley	374	706	24.3	8.2	3.2	1.7	0.8	0.2	3.0	6.4	46.3	1.2	3.0	39.6	1.1	1.5	73.6	58.1	0.8	2.4	0.9	17,133	5,765	2,285	1,225	582	145	660	1,355	+528
11	Greg Monroe G. Monroe	371	632	27.7	13.2	8.3	2.1	1.1	0.6	5.3	10.3	51.4	0.0	0.0	5.9	2.6	3.7	70.4	55.3	2.8	5.5	1.9	17,475	8,326	5,229	1,354	672	363	1,186	1,411	-1002
12	Dante Cunningham D. Cunningham	368	715	20.8	5.8	3.7	0.7	0.6	0.5	2.5	5.3	46.9	0.3	0.9	34.5	0.5	0.8	64.9	51.3	1.1	2.6	0.5	14,875	4,133	2,676	506	459	336	352	1,227	-903
13	Marvin Williams M. Williams	366	730	27.5	9.7	5.2	1.2	0.8	0.6	3.5	8.0	43.9	1.2	3.4	36.8	1.4	1.8	81.2	55.3	1.1	4.1	0.8	20,041	7,081	3,804	911	550	421	581	1,282	+119
14	Kemba Walker K. Walker	360	605	34.1	19.8	3.8	5.5	1.3	0.4	6.9	16.5	41.8	2.1	5.9	35.7	4.0	4.7	83.5	53.5	0.6	3.3	2.2	20,607	12,009	2,317	3,308	799	233	1,317	911	-361
15	Wesley Johnson W. Johnson	359	609	22.1	7.0	3.2	1.1	0.8	0.7	2.7	6.6	40.4	1.0	3.0	33.7	0.6	0.8	74.1	49.9	0.6	2.6	0.9	13,472	4,235	1,924	645	468	402	525	1,168	-1374
16	Jose Calderon J. Calderon	359	604	26.0	8.5	2.4	5.3	0.7	0.1	3.2	7.1	45.8	1.2	2.9	41.4	0.8	0.9	85.3	56.6	0.3	2.1	1.4	15,725	5,109	1,443	3,188	450	49	859	999	-1208
17	Amir Johnson A. Johnson	357	735	22.4	7.6	5.7	1.4	0.6	0.9	3.2	5.6	56.9	0.1	0.4	33.2	1.1	1.6	67.1	60.2	2.1	3.6	1.2	16,482	5,597	4,184	1,018	475	682	847	2,240	+681
18	Wesley Matthews W. Matthews	356	724	32.6	13.7	3.1	2.2	1.1	0.2	4.7	11.0	42.5	2.1	5.6	38.2	2.2	2.6	82.6	56.2	0.5	2.6	1.3	23,583	9,899	2,240	1,604	790	146	958	1,615	+427
19	Nick Young N. Young	356	563	23.8	12.0	2.1	0.9	0.6	0.2	4.2	10.1	41.3	1.7	4.4	37.7	2.0	2.3	83.5	53.8	0.4	1.7	0.9	13,424	6,741	1,162	529	320	108	525	1,046	-1135
20	DeMar DeRozan D. DeRozan	355	752	34.1	19.9	4.3	3.4	1.0	0.3	7.1	15.8	45.1	0.4	1.6	28.3	5.2	6.3	82.8	53.6	0.8	3.5	2.0	25,675	14,931	3,201	2,553	741	221	1,522	1,676	+235
21	Ersan Ilyasova E. Ilyasova	355	679	24.8	11.0	6.1	1.2	0.7	0.4	4.1	9.3	44.6	1.1	3.1	36.5	1.6	2.1	77.2	53.9	1.9	4.2	1.0	16,850	7,483	4,141	806	499	256	698	1,723	+106
22	Lou Williams L. Williams	355	684	26.9	16.1	2.4	3.6	0.9	0.2	5.1	12.1	42.2	1.6	4.6	35.3	4.3	5.0	85.3	56.3	0.4	2.0	1.8	18,404	11,028	1,637	2,479	641	143	1,228	936	+323
23	Bismack Biyombo B. Biyombo	354	583	20.3	4.9	6.3	0.5	0.3	1.4	1.9	3.6	51.7	0.0	0.0	0.0	1.2	2.2	57.1	54.5	1.9	4.3	0.9	11,835	2,880	3,660	288	149	803	529	1,292	-1738
24	Omri Casspi O. Casspi	354	588	20.3	7.9	4.0	1.1	0.6	0.2	2.9	6.4	45.4	0.8	2.3	36.8	1.2	1.8	67.8	54.7	0.8	3.2	1.0	11,961	4,642	2,355	662	362	134	595	917	-661
25	Tyreke Evans T. Evans	351	594	30.7	15.7	4.6	4.8	1.2	0.4	5.9	13.4	44.0	0.8	2.6	32.3	3.1	4.1	75.7	51.7	0.8	3.7	2.5	18,242	9,347	2,720	2,852	734	222	1,489	1,308	-1151