I didn't find anything for this season, but Gustav Forsling had the highest plus/minus in the 2025 playoffs, at +25.

	NAME	+/-	GP	G	A	P	PIM	PPG	PPA	SHG	SHA	GWG	OTG	S	S%	FOW	FO	FOW%	HIT	BKS	TKA	GVA	TOI/GP
1	Gustav Forsling G. Forsling	+25	14	1	4	5	8	0	1	0	0	1	0	17	5.9	0	0		14	20	7	8	22:13
2	Anton Lundell A. Lundell	+20	12	5	11	16	6	0	0	0	1	1	0	28	17.9	80	160	50.0	10	12	1	10	15:34
3	Seth Jones S. Jones	+20	14	3	4	7	6	0	1	0	0	1	0	23	13.0	0	0		26	19	8	17	25:41
4	Brad Marchand B. Marchand	+20	12	8	9	17	8	0	0	1	0	2	1	28	28.6	0	0		13	7	4	6	16:36
5	Aaron Ekblad A. Ekblad	+19	11	4	7	11	20	1	2	0	0	0	0	22	18.2	0	0		33	14	3	10	22:25
6	Carter Verhaeghe C. Verhaeghe	+19	12	5	9	14	4	3	1	0	0	2	0	26	19.2	7	15	46.7	31	4	5	13	18:10
7	Aleksander Barkov A. Barkov	+18	10	4	8	12	0	0	1	0	0	0	0	15	26.7	100	175	57.1	15	10	0	8	19:06
8	Eetu Luostarinen E. Luostarinen	+17	9	5	11	16	2	0	0	0	0	0	0	18	27.8	3	8	37.5	28	11	3	6	15:37
9	Evan Bouchard E. Bouchard	+17	10	1	10	11	2	0	1	0	0	0	0	25	4.0	0	0		4	17	8	16	25:34
10	Sam Bennett S. Bennett	+16	12	11	5	16	42	3	0	0	0	1	0	37	29.7	48	119	40.3	56	7	4	13	17:00
11	Jake Walman J. Walman	+16	12	2	3	5	6	0	0	0	0	0	0	20	10.0	0	0		17	37	2	12	19:55
12	Sam Reinhart S. Reinhart	+15	9	8	7	15	0	0	2	0	0	0	0	32	25.0	16	51	31.4	15	11	6	5	21:03
13	Brett Kulak B. Kulak	+14	10	1	3	4	6	0	0	0	0	0	0	13	7.7	0	0		8	22	3	13	22:56
14	Matthew Tkachuk M. Tkachuk	+14	10	7	10	17	14	5	4	0	0	1	0	23	30.4	0	0		15	8	4	8	16:56
15	Leon Draisaitl L. Draisaitl	+14	11	7	15	22	4	3	6	0	0	3	3	31	22.6	114	222	51.4	18	5	9	16	22:59
16	Niko Mikkola N. Mikkola	+13	11	3	3	6	14	0	1	0	0	1	0	6	50.0	0	0		25	11	6	4	19:20
17	Darnell Nurse D. Nurse	+13	9	2	2	4	8	0	0	0	0	0	0	18	11.1	0	0		32	22	3	7	24:04
18	Zach Hyman Z. Hyman	+13	7	3	5	8	0	0	0	0	0	1	0	21	14.3	0	0		47	3	1	7	18:28
19	Connor McDavid C. McDavid	+13	10	4	15	19	4	0	1	0	0	1	0	37	10.8	61	119	51.3	13	6	7	8	24:00
20	Dmitry Kulikov D. Kulikov	+12	9	2	2	4	4	0	0	0	0	1	0	11	18.2	0	0		29	7	3	13	16:38
21	Ryan Nugent-Hopkins R. Nugent-Hopkins	+12	7	4	8	12	4	2	0	0	0	1	0	17	23.5	22	60	36.7	10	5	0	4	18:38
22	Nate Schmidt N. Schmidt	+12	10	3	4	7	0	1	1	0	0	2	0	15	20.0	0	0		18	6	3	9	16:23
23	Jaccob Slavin J. Slavin	+12	8	2	0	2	0	0	0	0	0	1	1	17	11.8	0	0		5	25	2	8	22:45
24	Evander Kane E. Kane	+11	8	4	6	10	4	0	1	0	0	0	0	26	15.4	4	8	50.0	44	3	1	7	15:46
25	Vasily Podkolzin V. Podkolzin	+11	9	3	6	9	0	0	0	0	0	0	0	8	37.5	1	5	20.0	38	6	2	3	11:19