most losses by a player regular season and playoffs single season

Gary Smith has lost the most games in a combined regular-season and postseason, with 48 losses in 1970-71.

	NAME	L	SEASON	TM	GP	G	A	P	PIM	TOI/GP
1	Gary Smith G. Smith	48	1970-71	CGS	71	0	1	1	6	55:59
2	Al Rollins A. Rollins	47	1953-54	CHI	66	0	0	0	20	59:58
3	Peter Sidorkiewicz P. Sidorkiewicz	46	1992-93	OTT	64	0	0	0	8	52:56
4	Harry Lumley H. Lumley	44	1951-52	CHI	70	0	0	0	2	59:43
5	Mike Smith M. Smith	42	2014-15	ARI	62	0	1	1	10	57:21
6	Marc Denis M. Denis	41	2002-03	CBJ	77	0	0	0	6	58:35
7	Craig Billington C. Billington	41	1993-94	OTT	63	0	0	0	8	52:41
8	Harry Lumley H. Lumley	41	1950-51	CHI	64	0	0	0	4	59:08
9	Eddie Johnston E. Johnston	40	1963-64	BOS	70	0	0	0	2	60:00
10	Bob Essensa B. Essensa	39	1993-94	TOT	71	0	2	2	6	56:40
11	Denis Herron D. Herron	39	1975-76	KCS	64	0	0	0	16	56:25
12	Glenn Hall G. Hall	39	1957-58	CHI	70	0	0	0	20	59:57
13	Al Rollins A. Rollins	39	1956-57	CHI	70	0	1	1	9	59:58
14	Ken McAuley K. McAuley	39	1943-44	NYR	50	0	0	0	0	59:36
15	Curtis Joseph C. Joseph	38	1997-98	EDM	83	0	2	2	6	58:25
16	Bill Ranford B. Ranford	38	1992-93	EDM	67	0	3	3	10	56:01
17	Greg Millen G. Millen	38	1982-83	HFD	60	0	2	2	8	58:31
18	Tony Esposito T. Esposito	38	1976-77	CHI	71	0	2	2	6	58:48
19	Gary Smith G. Smith	38	1969-70	OAK	69	0	1	1	22	58:01
20	Ed Chadwick E. Chadwick	38	1957-58	TOR	70	0	0	0	0	59:57
21	Frank Brimsek F. Brimsek	38	1949-50	CHI	70	0	0	0	2	60:00
22	Steve Shields S. Shields	37	1999-00	SJS	79	0	1	1	29	56:52
23	Nikolai Khabibulin N. Khabibulin	37	1996-97	PHX	79	0	3	3	22	57:11
24	Marc Denis M. Denis	36	2003-04	CBJ	66	0	2	2	10	57:31
25	Curtis Joseph C. Joseph	36	1996-97	EDM	84	0	2	2	22	57:57