Wayne Smith has the highest career +/- per game played, with 3.5.

best career +/- per game by a player in NHL histor

	NAME	+/-/GP	+/-	GP	G	A	P	PIM	PPG	PPA	SHG	SHA	GWG	OTG	S	S%	FOW	FO	FOW%	HIT	BKS	TKA	GVA	TOI/GP
1	Wayne Smith W. Smith	3.5	+7	2	1	1	2	2	0	0	0	0	0		2	50.0
2	Aydar Suniev A. Suniev	2	+2	1	0	0	0	0	0	0	0	0	0	0	1	0.0	0	0		0	0	0	1	14:48
3	Hunter Brzustewicz H. Brzustewicz	2	+2	1	0	0	0	2	0	0	0	0	0	0	2	0.0	0	0		1	0	1	1	18:23
4	Martti Jarventie M. Jarventie	2	+2	1	0	0	0	0	0	0	0	0	0	0	0		0	0		3	0	0	0	12:57
5	Darrel Anholt D. Anholt	2	+2	1	0	0	0	0	0	0	0	0	0	0	0
6	Bryon Baltimore B. Baltimore	2	+4	2	0	0	0	4	0	0	0	0	0		2	0.0
7	Alexander Nikishin A. Nikishin	1.67	+5	3	0	3	3	2	0	0	0	0	0	0	6	0.0	0	0		8	4	1	3	16:32
8	David Farrance D. Farrance	1.5	+3	2	0	0	0	0	0	0	0	0	0	0	3	0.0	0	0		1	1	0	0	18:08
9	Lee Sweatt L. Sweatt	1.33	+4	3	1	1	2	2	0	0	0	0	1	0	4	25.0	0	0		4	6	0	0	13:23
10	Easton Cowan E. Cowan	1	+2	2	0	1	1	0	0	0	0	0	0	0	1	0.0	0	0		5	0	0	2	14:05
11	Emmitt Finnie E. Finnie	1	+3	3	0	2	2	0	0	0	0	0	0	0	3	0.0	0	1	0.0	8	1	4	2	14:01
12	John Farinacci J. Farinacci	1	+1	1	1	0	1	0	0	0	0	0	0	0	1	100.0	6	8	75.0	3	0	0	0	10:58
13	Sam Morton S. Morton	1	+1	1	1	0	1	0	0	0	0	0	1	0	1	100.0	4	7	57.1	4	1	0	0	12:25
14	Jack Williams J. Williams	1	+1	1	0	0	0	0	0	0	0	0	0	0	0		5	11	45.5	0	1	1	1	11:09
15	Semyon Der-Arguchintsev S. Der-Arguchintsev	1	+1	1	0	0	0	0	0	0	0	0	0	0	0		0	0		0	0	0	1	7:16
16	Drake Rymsha D. Rymsha	1	+1	1	0	0	0	0	0	0	0	0	0	0	0		0	0		0	0	0	0	13:16
17	Egor Korshkov E. Korshkov	1	+1	1	1	0	1	0	0	0	0	0	0	0	1	100.0	0	0		1	0	1	0	10:08
18	Dalton Smith D. Smith	1	+1	1	0	0	0	2	0	0	0	0	0	0	0		0	0		0	0	0	0	1:26
19	Vadim Shipachyov V. Shipachyov	1	+3	3	1	0	1	2	0	0	0	0	1	0	3	33.3	12	21	57.1	1	0	0	0	10:35
20	Samuel Henley S. Henley	1	+1	1	1	0	1	2	0	0	0	0	0	0	1	100.0	0	1	0.0	2	0	0	0	5:18
21	Viktor Loov V. Loov	1	+4	4	0	2	2	0	0	0	0	0	0	0	1	0.0	0	0		8	1	0	0	10:28
22	Raman Hrabarenka R. Hrabarenka	1	+1	1	0	0	0	0	0	0	0	0	0	0	0		0	0		1	3	0	0	11:55
23	Shawn Lalonde S. Lalonde	1	+1	1	0	0	0	0	0	0	0	0	0	0	0		0	0		3	0	1	0	14:47
24	Carl Sneep C. Sneep	1	+1	1	0	1	1	0	0	0	0	0	0	0	0		0	0		2	1	0	0	16:19
25	Jamie Fritsch J. Fritsch	1	+1	1	0	0	0	0	0	0	0	0	0	0	0		0	0		1	0	0	0	4:34