Ken McAuley has lost the most games by a rookie, with 39 losses in 1943-44.

most regular-season losses by a rookie in NHL history

	NAME	L	SEASON	TM	GP	G	A	P	+/-	PIM	PPG	PPA	SHG	SHA	GWG	OTG	S	FOW	FO	HIT	BKS	TKA	GVA	TOI/GP
1	Ken McAuley K. McAuley	39	1943-44	NYR	50	0	0	0		0														59:36
2	Ed Chadwick E. Chadwick	34	1956-57	TOR	70	0	0	0		0														59:56
3	Bruce Gamble B. Gamble	33	1960-61	BOS	52	0	0	0		14														59:58
4	Karel Vejmelka K. Vejmelka	32	2021-22	ARI	52	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	4	27	53:20
5	Charlie Gardiner C. Gardiner	32	1927-28	CHI	40	0	0	0		0														60:30
6	Sean Burke S. Burke	31	1988-89	NJD	62	0	3	3		54														57:54
7	Johnny Bower J. Bower	31	1953-54	NYR	70	0	0	0		0														60:00
8	Gerry McNeil G. McNeil	30	1950-51	MTL	70	0	0	0		0														60:00
9	Jack Gelineau J. Gelineau	30	1949-50	BOS	67	0	0	0		0														60:00
10	Peter Ing P. Ing	29	1990-91	TOR	56	0	0	0		6														55:49
11	Gerry Desjardins G. Desjardins	29	1968-69	LAK	61	0	1	1		6														57:18
12	Gump Worsley G. Worsley	29	1952-53	NYR	50	0	0	0		2														60:00
13	Jeff Deslauriers J. Deslauriers	28	2009-10	EDM	48	0	3	3		8														58:17
14	Marc-Andre Fleury M. Fleury	27	2005-06	PIT	50	0	1	1		0														56:11
15	Kirk McLean K. McLean	27	1987-88	VAN	41	0	2	2		8														56:56
16	Hardy Astrom H. Astrom	27	1979-80	CLR	49	0	0	0		6														52:22
17	Eddie Johnston E. Johnston	27	1962-63	BOS	50	0	0	0		10														58:12
18	Arturs Irbe A. Irbe	26	1992-93	SJS	36	0	0	0		10														57:36
19	Dave Parro D. Parro	26	1981-82	WSH	52	0	1	1		4														56:29
20	Don Head D. Head	26	1961-62	BOS	38	0	0	0		14														60:00
21	Mike Condon M. Condon	25	2015-16	MTL	55	0	0	0		0														56:47
22	Michel Dion M. Dion	25	1979-80	QUE	50	0	0	0		8														55:18
23	Gilles Meloche G. Meloche	25	1971-72	CGS	56	0	2	2		6														55:41
24	Dunc Wilson D. Wilson	25	1970-71	VAN	35	0	0	0		18														50:59
25	Alex Nedeljkovic A. Nedeljkovic	24	2021-22	DET	59	0	2	2	0	2	0	0	0	0	0	0	0	0	0	0	0	1	32	54:46