worst season completion percentage nfl history by qb

Gary Marangi has the lowest completion percentage by a quarterback in a season, at 35.3 percent in 1976.

Interpreted as:

worst season completion percentage with a minimum of 14 passing attempts per team game NFL history by qb

	NAME	PCT	SEASON	TM	GP	CMP	ATT	YDS	AVG	YDS/G	TD	INT	RTG	TD%	INT%	SCK	SCKY
1	Gary Marangi G. Marangi	35.3	1976	BUF	11	82	232	998	4.3	90.7	7	16	30.8	3.0	6.9	22	166
2	Jug Girard J. Girard	35.4	1949	GB	12	62	175	881	5.0	73.4	4	12	31.6	2.3	6.9
3	Dick Wood D. Wood	36.1	1966	MIA	14	83	230	993	4.3	70.9	4	14	30.6	1.7	6.1
4	Tobin Rote T. Rote	37.1	1950	GB	12	83	224	1,231	5.5	102.6	7	24	26.7	3.1	10.7
5	Cotton Davidson C. Davidson	37.1	1962	TOT	14	119	321	1,977	6.2	141.2	7	23	36.1	2.2	7.2
6	Lamar McHan L. McHan	37.7	1955	CHC	12	78	207	1,085	5.2	90.4	11	19	34.8	5.3	9.2
7	Bobby Douglass B. Douglass	37.9	1972	CHI	14	75	198	1,246	6.3	89.0	9	12	49.8	4.5	6.1	32	175
8	Terry Bradshaw T. Bradshaw	38.1	1970	PIT	13	83	218	1,410	6.5	108.5	6	24	30.4	2.8	11.0	25	242
9	Tobin Rote T. Rote	38.9	1953	GB	12	72	185	1,005	5.4	83.8	5	15	32.4	2.7	8.1
10	Johnny Green J. Green	39.0	1960	BUF	10	89	228	1,267	5.6	126.7	10	10	54.1	4.4	4.4
11	Boley Dancewicz B. Dancewicz	39.1	1947	BOS	12	66	169	1,203	7.1	100.3	11	18	46.4	6.5	10.7
12	Tom Sherman T. Sherman	39.8	1968	BOS	14	90	226	1,199	5.3	85.6	12	16	45.6	5.3	7.1
13	Steve Tensi S. Tensi	40.3	1967	DEN	14	131	325	1,915	5.9	136.8	16	17	54.8	4.9	5.2
14	Bobby Douglass B. Douglass	40.4	1971	CHI	12	91	225	1,164	5.2	97.0	5	15	37.0	2.2	6.7	30	235
15	Babe Parilli B. Parilli	40.6	1965	BOS	14	173	426	2,597	6.1	185.5	18	26	50.0	4.2	6.1
16	Paul Christman P. Christman	40.6	1945	CHC	8	89	219	1,147	5.2	143.4	5	12	42.6	2.3	5.5
17	Pete Beathard P. Beathard	40.7	1967	TOT	11	94	231	1,114	4.8	101.3	9	14	43.8	3.9	6.1
18	John McCormick J. McCormick	40.7	1965	DEN	14	103	253	1,292	5.1	92.3	7	14	43.5	2.8	5.5
19	John Hadl J. Hadl	41.2	1962	SD	14	107	260	1,632	6.3	116.6	15	24	43.3	5.8	9.2
20	Rusty Hilger R. Hilger	41.2	1988	DET	11	126	306	1,558	5.1	141.6	7	12	48.9	2.3	3.9	31	251
21	Lamar McHan L. McHan	41.2	1954	CHC	12	105	255	1,475	5.8	122.9	6	22	32.4	2.4	8.6
22	Tobin Rote T. Rote	41.4	1951	GB	12	106	256	1,540	6.0	128.3	15	20	48.6	5.9	7.8
23	Jim Zorn J. Zorn	41.4	1977	SEA	10	104	251	1,687	6.7	168.7	16	19	54.3	6.4	7.6	11	43
24	Marlin Briscoe M. Briscoe	41.5	1968	DEN	11	93	224	1,589	7.1	144.5	14	13	62.9	6.3	5.8
25	Jim Root J. Root	41.7	1953	CHC	11	80	192	1,149	6.0	104.5	8	11	51.8	4.2	5.7

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StatMuse has season-level data for completion percentage and pass attempts per team game going back to the 1932 season.

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