Lou Williams had a plus/minus of +575 in his career.

Interpreted as:

Lou Williams defensive plus minus in his career

	NAME	+/-	SEASON	TM	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	Lou Williams L. Williams	-24	2005-06	PHI	30	4.8	1.9	0.6	0.3	0.2	0.0	0.8	1.7	44.2	0.1	0.3	22.2	0.3	0.4	61.5	48.5	0.1	0.5	0.4	145	56	19	10	5	0	13	13
2	Lou Williams L. Williams	+39	2006-07	PHI	61	11.3	4.3	1.1	1.8	0.4	0.0	1.5	3.5	44.1	0.2	0.6	32.4	1.0	1.5	69.6	52.1	0.3	0.9	0.8	688	262	70	110	22	1	46	42
3	Lou Williams L. Williams	+3	2007-08	PHI	80	23.3	11.5	2.1	3.2	1.0	0.2	4.0	9.4	42.4	0.7	1.9	35.9	2.8	3.6	78.3	52.3	0.5	1.6	1.6	1,862	920	167	253	81	13	125	130
4	Lou Williams L. Williams	-61	2008-09	PHI	81	23.7	12.8	2.0	3.0	1.0	0.2	4.1	10.4	39.8	0.8	2.7	28.6	3.8	4.8	79.0	51.3	0.4	1.6	1.9	1,919	1,039	165	242	85	14	151	128
5	Lou Williams L. Williams	-102	2009-10	PHI	64	29.9	14.0	2.9	4.2	1.3	0.2	5.0	10.6	47.0	1.1	3.2	34.0	3.0	3.6	82.4	57.6	0.4	2.5	1.7	1,912	898	187	268	80	15	106	110
6	Lou Williams L. Williams	+94	2010-11	PHI	75	23.3	13.7	2.0	3.4	0.6	0.2	4.3	10.6	40.6	1.2	3.4	34.8	3.9	4.7	82.3	54.0	0.4	1.6	1.4	1,747	1,027	149	252	47	17	102	128
7	Lou Williams L. Williams	+229	2011-12	PHI	64	26.3	14.9	2.4	3.5	0.8	0.3	5.0	12.2	40.7	1.3	3.6	36.2	3.7	4.6	81.2	52.5	0.5	2.0	1.1	1,682	956	155	221	53	18	71	90
8	Lou Williams L. Williams	+4	2012-13	ATL	39	28.7	14.1	2.1	3.6	1.1	0.3	4.8	11.4	42.2	1.8	5.0	36.7	2.7	3.1	86.8	55.5	0.2	1.8	1.9	1,119	551	80	139	44	10	74	55
9	Lou Williams L. Williams	-166	2013-14	ATL	60	24.1	10.4	2.1	3.5	0.8	0.1	3.3	8.2	40.0	1.3	3.9	34.2	2.5	3.0	84.9	54.7	0.2	1.9	1.5	1,445	625	124	210	45	4	92	65
10	Lou Williams L. Williams	+295	2014-15	TOR	80	25.2	15.5	1.9	2.1	1.1	0.1	4.7	11.6	40.4	1.9	5.6	34.0	4.3	4.9	86.1	56.4	0.3	1.6	1.3	2,016	1,242	151	164	88	10	101	103
11	Lou Williams L. Williams	-399	2015-16	LAL	67	28.5	15.3	2.5	2.5	0.9	0.3	4.2	10.3	40.8	1.6	4.8	34.4	5.3	6.3	83.0	58.4	0.5	2.1	1.6	1,907	1,028	169	167	62	19	107	107
12	Lou Williams L. Williams	+50	2016-17	TOT	81	24.6	17.5	2.5	3.0	1.0	0.2	5.3	12.3	42.9	2.0	5.5	36.5	5.0	5.6	88.0	59.3	0.3	2.2	2.0	1,994	1,421	202	239	80	20	160	92
13	Lou Williams L. Williams	+123	2017-18	LAC	79	32.8	22.6	2.5	5.3	1.1	0.2	7.4	16.9	43.5	2.4	6.6	35.9	5.5	6.2	88.0	57.4	0.5	2.0	3.0	2,589	1,782	198	417	85	19	234	106
14	Lou Williams L. Williams	+195	2018-19	LAC	75	26.6	20.0	3.0	5.4	0.8	0.1	6.5	15.2	42.5	1.4	3.9	36.1	5.7	6.5	87.6	55.4	0.5	2.4	2.4	1,993	1,498	222	402	57	11	181	80
15	Lou Williams L. Williams	+203	2019-20	LAC	65	28.7	18.2	3.1	5.6	0.7	0.2	6.0	14.4	41.8	1.7	4.8	35.2	4.5	5.2	86.1	54.6	0.5	2.6	2.8	1,863	1,185	201	365	43	12	182	80
16	Lou Williams L. Williams	+77	2020-21	TOT	66	21.6	11.3	2.1	3.4	0.7	0.1	4.0	9.8	41.0	1.0	2.6	39.9	2.3	2.6	86.7	51.9	0.3	1.8	1.6	1,423	749	138	225	47	6	108	62
17	Lou Williams L. Williams	+15	2021-22	ATL	56	14.3	6.3	1.6	1.9	0.5	0.1	2.2	5.7	39.1	0.7	1.8	36.3	1.2	1.4	85.9	50.0	0.3	1.3	0.8	799	354	87	105	28	3	43	48
	Average	33.8			66.1	24.1	13.9	2.2	3.4	0.8	0.2	4.5	10.7	41.9	1.3	3.7	35.1	3.6	4.3	84.2	55.1	0.4	1.8	1.7	1594.3	917.2	146.1	222.9	56.0	11.3	111.5	84.6
	Total	+575			1,123	24.1	13.9	2.2	3.4	0.8	0.2	4.5	10.7	41.9	1.3	3.7	35.1	3.6	4.3	84.2	55.1	0.4	1.8	1.7	27,103	15,593	2,484	3,789	952	192	1,896	1,439