Gary Marangi has the lowest completion percentage by a quarterback in a season, at 35.3 percent in 1976.
Interpreted as:
worst completion percentage with a minimum of 14 passing attempts per team game by a player in a season NFL qb in history| NAME | PCT | SEASON | TM | GP | CMP | ATT | YDS | AVG | YDS/G | TD | INT | RTG | TD% | INT% | SCK | SCKY | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | 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 | | J. Girard | 35.4 | 1949 |  GB | 12 | 62 | 175 | 881 | 5.0 | 73.4 | 4 | 12 | 31.6 | 2.3 | 6.9 | ||
| 3 | | D. Wood | 36.1 | 1966 |  MIA | 14 | 83 | 230 | 993 | 4.3 | 70.9 | 4 | 14 | 30.6 | 1.7 | 6.1 | ||
| 4 | | T. Rote | 37.1 | 1950 | GB | 12 | 83 | 224 | 1,231 | 5.5 | 102.6 | 7 | 24 | 26.7 | 3.1 | 10.7 | ||
| 5 | | C. Davidson | 37.1 | 1962 | TOT | 14 | 119 | 321 | 1,977 | 6.2 | 141.2 | 7 | 23 | 36.1 | 2.2 | 7.2 | ||
| 6 | | L. McHan | 37.7 | 1955 |  CHC | 12 | 78 | 207 | 1,085 | 5.2 | 90.4 | 11 | 19 | 34.8 | 5.3 | 9.2 | ||
| 7 | | 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 |  | 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 | | T. Rote | 38.9 | 1953 | GB | 12 | 72 | 185 | 1,005 | 5.4 | 83.8 | 5 | 15 | 32.4 | 2.7 | 8.1 | ||
| 10 | | J. Green | 39.0 | 1960 | BUF | 10 | 89 | 228 | 1,267 | 5.6 | 126.7 | 10 | 10 | 54.1 | 4.4 | 4.4 | ||
| 11 | | B. Dancewicz | 39.1 | 1947 | BOS | 12 | 66 | 169 | 1,203 | 7.1 | 100.3 | 11 | 18 | 46.4 | 6.5 | 10.7 | ||
| 12 | | T. Sherman | 39.8 | 1968 |  BOS | 14 | 90 | 226 | 1,199 | 5.3 | 85.6 | 12 | 16 | 45.6 | 5.3 | 7.1 | ||
| 13 | | S. Tensi | 40.3 | 1967 |  DEN | 14 | 131 | 325 | 1,915 | 5.9 | 136.8 | 16 | 17 | 54.8 | 4.9 | 5.2 | ||
| 14 | | 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 | | B. Parilli | 40.6 | 1965 | BOS | 14 | 173 | 426 | 2,597 | 6.1 | 185.5 | 18 | 26 | 50.0 | 4.2 | 6.1 | ||
| 16 | | P. Christman | 40.6 | 1945 | CHC | 8 | 89 | 219 | 1,147 | 5.2 | 143.4 | 5 | 12 | 42.6 | 2.3 | 5.5 | ||
| 17 | | P. Beathard | 40.7 | 1967 | TOT | 11 | 94 | 231 | 1,114 | 4.8 | 101.3 | 9 | 14 | 43.8 | 3.9 | 6.1 | ||
| 18 | | J. McCormick | 40.7 | 1965 | DEN | 14 | 103 | 253 | 1,292 | 5.1 | 92.3 | 7 | 14 | 43.5 | 2.8 | 5.5 | ||
| 19 | | J. Hadl | 41.2 | 1962 |  SD | 14 | 107 | 260 | 1,632 | 6.3 | 116.6 | 15 | 24 | 43.3 | 5.8 | 9.2 | ||
| 20 | | 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 | | L. McHan | 41.2 | 1954 | CHC | 12 | 105 | 255 | 1,475 | 5.8 | 122.9 | 6 | 22 | 32.4 | 2.4 | 8.6 | ||
| 22 | | T. Rote | 41.4 | 1951 | GB | 12 | 106 | 256 | 1,540 | 6.0 | 128.3 | 15 | 20 | 48.6 | 5.9 | 7.8 | ||
| 23 | | 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 | | M. Briscoe | 41.5 | 1968 | DEN | 11 | 93 | 224 | 1,589 | 7.1 | 144.5 | 14 | 13 | 62.9 | 6.3 | 5.8 | ||
| 25 | | J. Root | 41.7 | 1953 | CHC | 11 | 80 | 192 | 1,149 | 6.0 | 104.5 | 8 | 11 | 51.8 | 4.2 | 5.7 | ||
StatMuse has season-level data for completion percentage and pass attempts per team game going back to the 1932 season.
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