Ish Smith has put up his most career points per game against the Celtics, with 9.6 per game.

ish smith 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	+/-
Celtics	9.6	25	22.9	2.9	3.8	0.6	0.4	1.4	4.2	8.5	50.0	0.2	0.8	31.6	0.9	1.4	65.7	572	241	72	94	16	11	35	36	-94
Suns	9.1	27	20.0	2.8	4.6	0.9	0.3	1.3	3.7	8.7	42.3	0.5	1.4	37.8	1.3	1.7	72.3	541	246	75	125	23	9	35	28	+81
Spurs	8.7	20	19.8	2.6	3.7	0.4	0.3	1.1	3.6	7.4	48.3	0.5	0.9	52.9	1.1	1.5	73.3	397	173	52	74	8	5	22	21	-1
Nets	8.6	29	20.9	2.8	3.6	0.7	0.3	0.9	3.6	8.2	43.5	0.7	1.8	39.6	0.7	1.0	72.4	607	248	80	105	19	8	26	46	-5
Raptors	8.4	32	20.0	2.3	3.6	0.6	0.4	1.0	3.6	7.5	48.5	0.5	1.1	45.7	0.7	1.1	61.8	639	269	73	114	20	13	31	34	-122
Rockets	8.3	18	21.9	3.0	3.7	0.5	0.3	1.4	3.7	8.1	45.2	0.6	1.9	29.4	0.4	0.6	72.7	394	150	54	66	9	6	26	22	-1
Hawks	8.0	33	21.1	2.7	4.6	0.9	0.2	1.2	3.5	7.6	45.6	0.5	1.5	32.0	0.6	0.8	80.0	695	264	88	151	31	5	38	59	-15
Magic	7.8	31	21.0	2.4	4.5	0.6	0.2	1.1	3.4	8.0	42.5	0.4	1.5	23.9	0.7	1.1	66.7	650	243	75	138	18	7	34	54	-58
Heat	7.7	34	20.9	2.5	3.7	0.5	0.1	1.4	3.3	7.3	45.7	0.4	1.1	31.6	0.7	1.2	61.0	709	263	84	127	17	2	48	43	-14
76ers	7.7	20	22.5	2.3	4.5	0.8	0.7	1.4	3.3	8.3	39.2	0.4	1.6	25.8	0.8	1.2	69.6	451	154	45	90	15	13	27	19	-88
Wizards	7.7	29	19.0	2.2	3.5	0.8	0.2	1.4	3.4	8.0	42.9	0.3	1.4	22.0	0.5	1.1	45.5	551	222	64	102	22	5	41	30	-89
Cavaliers	7.6	29	19.7	2.6	3.9	0.8	0.3	1.1	3.2	7.9	40.4	0.4	1.4	31.7	0.8	1.1	71.0	572	219	74	112	24	8	33	49	+5
Hornets	7.4	29	22.7	2.9	4.6	0.7	0.5	1.6	3.3	8.4	39.6	0.5	1.8	26.9	0.3	0.6	47.1	658	216	84	134	21	15	46	44	-62
Lakers	7.0	25	17.3	2.2	3.0	0.6	0.1	1.2	3.2	6.9	45.9	0.3	1.0	33.3	0.4	0.5	76.9	434	176	54	75	15	3	29	33	-32
Bucks	6.8	27	20.0	2.1	3.7	0.7	0.2	1.7	3.1	7.7	40.1	0.3	1.5	22.5	0.3	0.6	60.0	541	184	58	99	20	5	47	44	-96
Jazz	6.8	22	17.6	2.4	3.0	0.8	0.2	1.1	2.8	7.2	38.4	0.3	0.8	33.3	1.0	1.4	67.7	387	149	53	66	18	5	25	26	-75
Timberwolves	6.7	23	19.6	3.0	5.1	1.0	0.1	1.1	3.0	6.0	50.4	0.3	0.6	50.0	0.3	0.3	87.5	452	154	68	117	22	2	25	38	+145
Bulls	6.6	38	20.0	2.2	4.2	0.5	0.3	1.1	2.8	7.1	39.9	0.5	1.6	32.2	0.5	0.7	70.4	761	252	85	160	19	11	41	43	+25
Pelicans	6.5	19	16.8	2.0	3.5	0.6	0.3	1.4	2.6	4.9	52.7	0.2	1.0	21.1	1.2	1.6	73.3	319	124	38	66	12	6	26	22	+36
Nuggets	6.4	26	19.7	2.7	4.3	0.8	0.3	1.4	2.8	7.2	39.4	0.3	0.7	50.0	0.4	0.5	76.9	511	167	70	113	21	9	36	34	+18
Kings	6.3	25	18.6	2.4	3.8	0.9	0.3	1.4	2.6	5.8	44.8	0.2	1.1	22.2	0.9	1.1	81.5	465	158	61	95	22	7	36	22	+62
Pistons	6.3	22	17.3	2.5	4.1	0.7	0.3	1.5	2.7	6.4	42.1	0.4	1.0	38.1	0.5	0.7	80.0	381	138	54	91	16	7	33	30	+2
Knicks	6.2	41	17.1	2.1	3.3	0.6	0.1	1.0	2.7	6.8	39.7	0.4	1.2	31.4	0.4	0.7	64.3	701	254	88	137	24	4	41	33	-30
Thunder	6.2	22	20.5	2.6	3.5	0.7	0.3	1.0	2.6	6.5	40.6	0.2	0.9	20.0	0.7	1.1	64.0	450	136	58	77	16	7	22	32	-107
Mavericks	6.1	22	16.8	2.3	3.3	0.3	0.3	1.3	2.6	6.2	42.6	0.3	0.8	33.3	0.5	0.7	75.0	369	134	50	73	7	7	29	32	-40