nfl player lowest passing completion percentage with a minimum 112 passing attempts in a season

Warren Heller has the lowest completion percentage with 112+ passing attempts in a season, at 27.7 percent in his rookie season in 1934.

	NAME	PCT	ATT	SEASON	TM	GP	CMP	YDS	AVG	YDS/G	TD	INT	RTG	TD%	INT%	SCK	SCKY
1	Warren Heller W. Heller	27.7	112	1934	PIT	12	31	511	4.6	42.6	2	15	12.5	1.8	13.4
2	Billy Patterson B. Patterson	29.1	117	1940	PIT	11	34	529	4.5	48.1	3	15	14.9	2.6	12.8
3	Roy Zimmerman R. Zimmerman	34.7	124	1943	P-P	10	43	846	6.8	84.6	9	17	44.0	7.3	13.7
4	Jack Scarbath J. Scarbath	34.9	129	1953	WAS	12	45	862	6.7	71.8	9	12	43.5	7.0	9.3
5	John McCormick J. McCormick	35.2	193	1966	DEN	14	68	993	5.1	70.9	6	15	30.9	3.1	7.8
6	Gary Marangi G. Marangi	35.3	232	1976	BUF	11	82	998	4.3	90.7	7	16	30.8	3.0	6.9	22	166
7	Jug Girard J. Girard	35.4	175	1949	GB	12	62	881	5.0	73.4	4	12	31.6	2.3	6.9
8	Dave Smukler D. Smukler	35.6	118	1937	PHI	11	42	432	3.7	39.3	5	14	21.5	4.2	11.9
9	George Blanda G. Blanda	35.9	131	1952	CHB	12	47	664	5.1	55.3	8	11	38.5	6.1	8.4
10	Dick Wood D. Wood	36.1	230	1966	MIA	14	83	993	4.3	70.9	4	14	30.6	1.7	6.1
11	Adrian Burk A. Burk	36.1	119	1950	BAL	12	43	798	6.7	66.5	6	12	37.4	5.0	10.1
12	Joe Geri J. Geri	36.3	113	1950	PIT	12	41	866	7.7	72.2	6	15	42.4	5.3	13.3
13	Arnie Herber A. Herber	36.5	115	1934	GB	11	42	799	6.9	72.6	8	12	45.1	7.0	10.4
14	Tobin Rote T. Rote	37.1	224	1950	GB	12	83	1,231	5.5	102.6	7	24	26.7	3.1	10.7
15	Hugh McCullough H. McCullough	37.1	116	1940	CHC	11	43	529	4.6	48.1	4	21	23.9	3.4	18.1
16	Cotton Davidson C. Davidson	37.1	321	1962	TOT	14	119	1,977	6.2	141.2	7	23	36.1	2.2	7.2
17	Harry Gilmer H. Gilmer	37.1	132	1949	WAS	12	49	869	6.6	72.4	4	15	31.0	3.0	11.4
18	Kent Nix K. Nix	37.2	137	1971	CHI	8	51	760	5.5	95.0	6	10	40.4	4.4	7.3	10	91
19	Doug Williams D. Williams	37.6	194	1978	TB	10	73	1,170	6.0	117.0	7	8	53.4	3.6	4.1	6	69
20	Lamar McHan L. McHan	37.7	207	1955	CHC	12	78	1,085	5.2	90.4	11	19	34.8	5.3	9.2
21	Mike Taliaferro M. Taliaferro	37.8	119	1965	NYJ	14	45	531	4.5	37.9	3	7	36.1	2.5	5.9
22	Warren Rabb W. Rabb	37.9	177	1962	BUF	14	67	1,196	6.8	85.4	10	14	47.7	5.6	7.9
23	Bobby Douglass B. Douglass	37.9	198	1972	CHI	14	75	1,246	6.3	89.0	9	12	49.8	4.5	6.1	32	175
24	Mike Taliaferro M. Taliaferro	38.1	176	1968	BOS	7	67	889	5.1	127.0	4	15	26.9	2.3	8.5
25	Terry Bradshaw T. Bradshaw	38.1	218	1970	PIT	13	83	1,410	6.5	108.5	6	24	30.4	2.8	11.0	25	242

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StatMuse has season-level data for completion percentage and passing attempts going back to the 1932 season.

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Warren Heller has the lowest completion percentage with 112+ passing attempts in a season, at 27.7 percent in his rookie season in 1934.

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