I don't have anything for this season, but Matt Duchene and Wyatt Johnston were tied for the lowest plus/minus in the 2025 playoffs, at -16.

Interpreted as:

Worst +/- by a player this post season

	NAME	+/-	GP	G	A	P	PIM	PPG	PPA	SHG	SHA	GWG	OTG	S	S%	FOW	FO	FOW%	HIT	BKS	TKA	GVA	TOI/GP
1	Matt Duchene M. Duchene	-16	18	1	5	6	6	1	5	0	0	1	0	23	4.3	82	127	64.6	16	13	3	19	16:36
2	Wyatt Johnston W. Johnston	-16	18	4	6	10	6	2	3	0	0	1	0	36	11.1	100	198	50.5	35	6	3	8	19:22
3	Jamie Benn J. Benn	-11	18	1	2	3	26	1	1	0	0	0	0	25	4.0	41	90	45.6	66	14	4	8	13:06
4	Thomas Harley T. Harley	-10	18	4	10	14	10	1	7	0	0	1	1	31	12.9	0	0		22	39	6	34	25:58
5	Shayne Gostisbehere S. Gostisbehere	-9	15	3	6	9	4	1	5	0	0	0	0	24	12.5	0	0		12	16	4	12	18:56
6	Ivan Barbashev I. Barbashev	-9	11	1	1	2	6	0	1	0	0	1	1	14	7.1	7	11	63.6	43	6	1	10	17:30
7	Shea Theodore S. Theodore	-9	11	2	3	5	0	2	2	0	0	0	0	24	8.3	0	0		1	20	1	17	23:02
8	Jack Eichel J. Eichel	-8	11	1	9	10	0	0	4	0	1	0	0	30	3.3	90	192	46.9	16	12	3	11	23:08
9	Luke Schenn L. Schenn	-8	11	0	1	1	32	0	0	0	0	0	0	11	0.0	0	0		59	13	3	9	16:30
10	Adrian Kempe A. Kempe	-8	6	4	6	10	4	0	6	0	0	0	0	21	19.0	4	7	57.1	12	8	0	6	21:44
11	Drew Doughty D. Doughty	-7	6	1	3	4	6	1	0	0	0	0	0	10	10.0	0	0		12	7	0	3	27:12
12	Brendan Gallagher B. Gallagher	-7	5	0	2	2	0	0	1	0	0	0	0	13	0.0	0	1	0.0	16	1	0	2	15:37
13	Taylor Hall T. Hall	-7	15	2	4	6	2	0	2	0	0	1	0	30	6.7	0	6	0.0	19	5	1	12	14:50
14	Brayden McNabb B. McNabb	-7	11	0	4	4	6	0	0	0	0	0	0	10	0.0	0	0		33	29	2	12	21:14
15	Ilya Lyubushkin I. Lyubushkin	-7	14	0	3	3	4	0	0	0	0	0	0	12	0.0	0	0		18	15	1	12	17:03
16	Pavel Dorofeyev P. Dorofeyev	-7	8	1	1	2	2	1	1	0	0	0	0	27	3.7	0	1	0.0	6	3	3	1	17:26
17	Quinton Byfield Q. Byfield	-7	6	3	1	4	2	0	0	0	0	0	0	18	16.7	36	83	43.4	14	2	4	9	22:27
18	Cody Ceci C. Ceci	-6	18	0	3	3	2	0	0	0	0	0	0	19	0.0	0	0		22	25	2	9	21:31
19	Jonathan Drouin J. Drouin	-6	7	0	3	3	0	0	3	0	0	0	0	9	0.0	4	7	57.1	5	4	3	6	14:37
20	Victor Hedman V. Hedman	-6	5	0	3	3	0	0	2	0	0	0	0	10	0.0	0	0		3	6	1	6	24:32
21	Anze Kopitar A. Kopitar	-6	6	2	7	9	0	1	3	0	0	0	0	8	25.0	80	138	58.0	8	6	3	5	21:29
22	John Tavares J. Tavares	-6	13	5	2	7	10	3	1	0	0	1	0	40	12.5	107	196	54.6	22	14	2	13	18:33
23	Morgan Barron M. Barron	-6	13	0	2	2	2	0	0	0	0	0	0	13	0.0	47	101	46.5	37	1	4	6	12:02
24	Cole Caufield C. Caufield	-6	5	3	1	4	0	2	0	0	0	0	0	24	12.5	1	2	50.0	5	0	3	2	19:35
25	Dawson Mercer D. Mercer	-6	5	2	0	2	8	0	0	0	0	0	0	8	25.0	8	28	28.6	15	1	1	1	21:05