Joe Montana had the highest completion percentage by a quarterback with 300+ passing attempts in 1989, at 70.2 percent.
| NAME | PCT | ATT | SEASON | TM | GP | CMP | YDS | AVG | YDS/G | TD | INT | RTG | TD% | INT% | SCK | SCKY | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Montana | 70.2 | 386 | 1989 |  SF | 13 | 271 | 3,521 | 9.1 | 270.8 | 26 | 8 | 112.4 | 6.7 | 2.1 | 33 | 198 |
| 2 |  | B. Hebert | 62.9 | 353 | 1989 |  NO | 14 | 222 | 2,686 | 7.6 | 191.9 | 15 | 15 | 82.7 | 4.2 | 4.2 | 22 | 171 |
| 3 | | S. DeBerg | 60.5 | 324 | 1989 |  KC | 12 | 196 | 2,529 | 7.8 | 210.8 | 11 | 16 | 75.8 | 3.4 | 4.9 | 14 | 111 |
| 4 | | K. O'Brien | 60.4 | 477 | 1989 |  NYJ | 15 | 288 | 3,346 | 7.0 | 223.1 | 12 | 18 | 74.3 | 2.5 | 3.8 | 50 | 391 |
| 5 |  | W. Moon | 60.3 | 464 | 1989 |  HOU | 16 | 280 | 3,631 | 7.8 | 226.9 | 23 | 14 | 88.9 | 5.0 | 3.0 | 35 | 267 |
| 6 | | B. Kosar | 59.1 | 513 | 1989 |  CLE | 16 | 303 | 3,533 | 6.9 | 220.8 | 18 | 14 | 80.3 | 3.5 | 2.7 | 34 | 192 |
| 7 | | D. Majkowski | 58.9 | 599 | 1989 |  GB | 16 | 353 | 4,318 | 7.2 | 269.9 | 27 | 20 | 82.3 | 4.5 | 3.3 | 47 | 268 |
| 8 | | M. Rypien | 58.8 | 476 | 1989 |  WAS | 14 | 280 | 3,768 | 7.9 | 269.1 | 22 | 13 | 88.1 | 4.6 | 2.7 | 16 | 108 |
| 9 | | J. Everett | 58.7 | 518 | 1989 |  RAM | 16 | 304 | 4,310 | 8.3 | 269.4 | 29 | 17 | 90.6 | 5.6 | 3.3 | 29 | 214 |
| 10 |  | J. Kelly | 58.3 | 391 | 1989 |  BUF | 13 | 228 | 3,130 | 8.0 | 240.8 | 25 | 18 | 86.2 | 6.4 | 4.6 | 30 | 216 |
| 11 | | D. Krieg | 57.3 | 499 | 1989 |  SEA | 15 | 286 | 3,309 | 6.6 | 220.6 | 21 | 20 | 74.8 | 4.2 | 4.0 | 37 | 289 |
| 12 | | B. Esiason | 56.7 | 455 | 1989 |  CIN | 16 | 258 | 3,525 | 7.7 | 220.3 | 28 | 11 | 92.1 | 6.2 | 2.4 | 36 | 288 |
| 13 | | P. Simms | 56.3 | 405 | 1989 |  NYG | 15 | 228 | 3,061 | 7.6 | 204.1 | 14 | 14 | 77.6 | 3.5 | 3.5 | 40 | 244 |
| 14 | | G. Hogeboom | 56.0 | 364 | 1989 |  PHX | 14 | 204 | 2,591 | 7.1 | 185.1 | 14 | 19 | 69.5 | 3.8 | 5.2 | 40 | 266 |
| 15 |  | D. Marino | 56.0 | 550 | 1989 |  MIA | 16 | 308 | 3,997 | 7.3 | 249.8 | 24 | 22 | 76.9 | 4.4 | 4.0 | 10 | 86 |
| 16 | | J. McMahon | 55.3 | 318 | 1989 |  SD | 12 | 176 | 2,132 | 6.7 | 177.7 | 10 | 10 | 73.5 | 3.1 | 3.1 | 28 | 167 |
| 17 | | B. Brister | 54.7 | 342 | 1989 |  PIT | 14 | 187 | 2,365 | 6.9 | 168.9 | 9 | 10 | 73.1 | 2.6 | 2.9 | 45 | 452 |
| 18 | | R. Cunningham | 54.5 | 532 | 1989 |  PHI | 16 | 290 | 3,400 | 6.4 | 212.5 | 21 | 15 | 75.5 | 3.9 | 2.8 | 45 | 343 |
| 19 | | V. Testaverde | 53.8 | 480 | 1989 |  TB | 14 | 258 | 3,133 | 6.5 | 223.8 | 20 | 22 | 68.9 | 4.2 | 4.6 | 38 | 294 |
| 20 |  | J. Elway | 53.6 | 416 | 1989 |  DEN | 15 | 223 | 3,051 | 7.3 | 203.4 | 18 | 18 | 73.7 | 4.3 | 4.3 | 35 | 298 |
| 21 | | W. Wilson | 53.6 | 362 | 1989 |  MIN | 14 | 194 | 2,543 | 7.0 | 181.6 | 9 | 12 | 70.5 | 2.5 | 3.3 | 27 | 194 |
| 22 | | C. Miller | 53.2 | 526 | 1989 |  ATL | 15 | 280 | 3,459 | 6.6 | 230.6 | 16 | 10 | 76.1 | 3.0 | 1.9 | 41 | 318 |
| 23 | | J. Trudeau | 52.5 | 362 | 1989 |  IND | 13 | 190 | 2,317 | 6.4 | 178.2 | 15 | 13 | 71.3 | 4.1 | 3.6 | 20 | 125 |
| 24 | | M. Tomczak | 51.0 | 306 | 1989 |  CHI | 16 | 156 | 2,058 | 6.7 | 128.6 | 16 | 16 | 68.2 | 5.2 | 5.2 | 10 | 68 |
StatMuse has season-level data for completion percentage and passing attempts going back to the 1932 season.
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| NFC East | W | L | T | PCT |
|---|---|---|---|---|
| Eagles | 14 | 3 | 0 | .824 |
 Commanders | 12 | 5 | 0 | .706 |
| NFC North | W | L | T | PCT |
 Lions | 15 | 2 | 0 | .882 |
| Vikings | 14 | 3 | 0 | .824 |
| NFC South | W | L | T | PCT |
| Buccaneers | 10 | 7 | 0 | .588 |
| Falcons | 8 | 9 | 0 | .471 |
| NFC West | W | L | T | PCT |
 Rams | 10 | 7 | 0 | .588 |
| Seahawks | 10 | 7 | 0 | .588 |
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