Quentin Richardson had his most career points per game versus the Mavericks, with 13.4 per game.

quentin richardson highest career ppg by opponent

OPP	PPG	GP	MPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Mavericks	13.4	24	30.0	5.6	1.5	0.8	0.3	1.4	5.1	12.4	41.3	1.7	4.9	34.2	1.5	2.1	68.6	719	321	135	37	18	6	34	36	-170
Hornets	13.3	14	30.1	5.1	2.3	0.6	0.2	1.5	4.7	12.1	39.1	2.5	6.1	41.2	1.4	1.8	76.0	421	186	72	32	9	3	21	20	+26
Trail Blazers	13.1	22	27.9	4.2	1.6	1.1	0.4	1.0	5.1	10.5	48.3	1.9	4.2	45.2	1.0	1.4	76.7	613	289	93	35	25	8	21	40	-1
Wizards	13.0	31	28.7	4.9	1.7	0.5	0.1	1.1	4.7	10.8	43.7	2.2	5.2	42.2	1.4	1.8	78.6	888	404	153	53	17	2	35	70	+23
Magic	12.7	24	28.8	4.7	1.8	1.2	0.2	1.3	4.6	11.0	42.2	1.7	4.8	34.8	1.8	2.3	76.8	691	305	113	44	29	4	32	54	+24
Knicks	12.2	16	26.6	4.2	1.5	0.7	0.3	1.2	4.5	9.9	45.3	1.7	4.8	35.5	1.5	2.1	72.7	426	195	67	24	11	4	19	40	+98
Suns	12.2	25	26.9	5.1	1.9	1.2	0.3	1.6	4.4	10.8	40.7	1.6	4.3	36.4	1.8	2.4	73.8	673	304	128	48	29	8	40	45	+11
Warriors	11.7	26	28.1	5.4	1.1	0.8	0.2	1.1	4.3	10.1	43.1	1.5	4.0	38.5	1.5	2.4	60.3	732	304	140	28	20	4	28	63	+15
Bulls	11.4	27	26.0	4.5	1.2	0.4	0.2	0.7	4.2	9.7	43.3	1.7	4.2	41.6	1.2	1.7	71.7	703	308	121	33	12	5	18	40	+95
Cavaliers	11.1	28	28.3	4.3	1.3	0.8	0.2	1.3	4.1	9.7	42.1	1.6	4.3	38.3	1.3	1.8	72.0	792	310	120	35	21	6	36	62	+42
Nuggets	11.1	28	26.4	4.9	1.4	0.9	0.3	1.1	4.1	10.3	40.3	1.3	3.8	33.0	1.5	2.1	71.7	738	310	138	40	26	8	32	61	+4
Lakers	10.9	29	24.8	3.8	1.2	0.9	0.2	1.3	3.8	9.6	39.2	1.7	4.6	36.4	1.8	2.4	72.9	719	317	111	35	25	5	39	55	-56
Clippers	10.6	11	28.5	4.7	1.9	1.3	0.5	1.2	3.6	9.4	38.8	1.8	5.2	35.1	1.5	2.1	73.9	313	117	52	21	14	5	13	25	+32
Grizzlies	10.6	26	26.8	4.9	1.2	0.9	0.2	1.2	3.9	9.7	40.6	1.5	4.5	33.9	1.2	1.6	75.6	696	275	128	31	23	5	30	55	+29
Celtics	10.4	30	28.1	5.6	1.7	0.9	0.1	1.1	3.6	9.9	36.5	1.6	4.4	36.8	1.6	2.2	73.8	842	313	167	50	27	3	32	76	-127
Heat	10.4	26	27.2	5.6	1.3	0.8	0.2	0.8	3.8	9.2	40.8	1.5	4.2	34.5	1.4	2.0	70.6	706	270	145	34	21	5	22	58	-7
Timberwolves	10.1	26	26.0	4.2	1.5	0.7	0.2	1.2	3.5	8.3	42.6	1.7	4.2	40.9	1.3	1.7	77.3	675	263	110	40	19	5	30	33	-2
76ers	9.8	30	27.3	4.7	1.7	1.1	0.2	1.2	3.5	9.0	38.9	1.7	4.4	37.6	1.2	1.3	89.7	820	295	140	50	34	5	37	60	-91
Kings	9.7	25	26.8	4.7	2.0	0.6	0.3	0.9	3.6	9.6	36.9	1.4	4.5	32.1	1.2	1.6	70.7	671	243	118	50	14	7	23	52	-2
Bobcats	9.6	26	27.1	4.0	1.1	0.8	0.2	1.3	3.4	9.3	36.2	1.9	4.9	38.3	1.0	1.6	61.0	705	250	104	29	20	5	34	51	-59
Bucks	9.3	30	27.0	4.9	1.2	0.8	0.1	0.9	3.4	8.7	39.1	1.3	4.1	30.6	1.3	2.2	57.6	811	280	148	36	24	2	27	54	-81
Thunder	9.3	26	23.4	3.8	1.2	0.5	0.2	1.0	3.4	9.3	36.8	1.5	4.3	33.9	1.0	1.3	71.4	607	241	98	32	13	6	27	55	-34
Pacers	9.2	29	26.5	5.3	1.8	0.7	0.3	1.1	3.3	8.6	38.3	1.5	4.2	35.5	1.2	1.6	74.5	768	268	153	52	21	9	33	56	+124
Raptors	9.2	27	25.8	5.0	1.4	0.5	0.1	1.1	3.4	8.7	39.6	1.4	3.9	35.6	1.0	1.4	70.3	696	249	134	38	13	4	29	57	-17
Pistons	9.0	28	24.0	3.9	1.7	0.8	0.2	0.9	3.4	7.9	42.8	1.0	3.4	28.7	1.3	1.7	75.0	673	253	109	47	21	5	26	50	-5