Earlier in the off-season I introduced my NerdBall Efficiency Ranking or NEFF Rating, a set of rankings that give an analytical take of a multitude of facets of NFL play, with an aim to identify the best and worst performing teams throughout the NFL season. A breakdown of how the rankings are put together and some historical context can be found here.
Stats are up and through 2021 Week 5
2021 NEFF Ratings – Week 5
| Team | Total NEFF | Rank | ONEFF | Rank | DNEFF | Rank | STNEFF | Rank |
|---|---|---|---|---|---|---|---|---|
| Buccaneers | 57.1% | 1 | 83.8% | 1 | -33.8% | 9 | 0.0% | 16 |
| Falcons | 40.0% | 2 | 67.5% | 5 | -27.5% | 2 | -16.7% | 24 |
| Bills | 30.0% | 3 | 66.3% | 6 | -28.8% | 4 | -37.5% | 30 |
| Saints | 30.0% | 3 | 55.0% | 11 | -31.3% | 6 | 8.3% | 11 |
| Bears | 28.6% | 5 | 50.0% | 14 | -27.5% | 2 | 8.3% | 11 |
| Eagles | 28.6% | 5 | 25.0% | 28 | -8.8% | 1 | 29.2% | 4 |
| Steelers | 27.1% | 7 | 58.8% | 7 | -37.5% | 12 | 8.3% | 11 |
| Bengals | 20.0% | 8 | 42.5% | 16 | -38.8% | 14 | 45.8% | 2 |
| Rams | 18.6% | 9 | 51.3% | 13 | -31.3% | 6 | -12.5% | 23 |
| Cowboys | 14.3% | 10 | 70.0% | 4 | -42.5% | 15 | -50.0% | 32 |
| Vikings | 12.9% | 11 | 37.5% | 19 | -35.0% | 11 | 29.2% | 4 |
| Cardinals | 10.0% | 12 | 41.3% | 18 | -30.0% | 5 | -8.3% | 19 |
| Ravens | 10.0% | 12 | 57.5% | 8 | -57.5% | 25 | 29.2% | 4 |
| Titans | 10.0% | 12 | 57.5% | 8 | -43.8% | 16 | -16.7% | 24 |
| Texans | 2.9% | 15 | 55.0% | 11 | -45.0% | 18 | -25.0% | 26 |
| Chargers | -1.4% | 16 | 77.5% | 3 | -77.5% | 30 | -4.2% | 18 |
| Browns | -2.9% | 17 | 81.3% | 2 | -85.0% | 32 | 4.2% | 15 |
| Colts | -7.1% | 18 | 56.3% | 10 | -53.8% | 21 | -29.2% | 27 |
| Patriots | -7.1% | 18 | 42.5% | 16 | -56.3% | 22 | 25.0% | 7 |
| Packers | -8.6% | 20 | 43.8% | 15 | -37.5% | 12 | -45.8% | 31 |
| 49ers | -11.4% | 21 | 31.3% | 24 | -43.8% | 16 | 8.3% | 11 |
| Lions | -14.3% | 22 | 28.8% | 25 | -32.5% | 8 | -29.2% | 27 |
| Seahawks | -17.1% | 23 | 27.5% | 26 | -46.3% | 19 | 12.5% | 10 |
| Jaguars | -20.0% | 24 | 33.8% | 21 | -56.3% | 22 | 16.7% | 8 |
| Giants | -22.9% | 25 | 33.8% | 21 | -68.8% | 28 | 50.0% | 1 |
| Broncos | -30.0% | 26 | 32.5% | 23 | -56.3% | 22 | -8.3% | 19 |
| Football Team | -30.0% | 26 | 35.0% | 20 | -58.8% | 26 | -8.3% | 19 |
| Panthers | -31.4% | 28 | 15.0% | 32 | -33.8% | 9 | -29.2% | 27 |
| Raiders | -38.6% | 29 | 21.3% | 29 | -52.5% | 20 | -8.3% | 19 |
| Chiefs | -42.9% | 30 | 20.0% | 30 | -68.8% | 28 | 37.5% | 3 |
| Jets | -45.7% | 31 | 20.0% | 30 | -65.0% | 27 | 16.7% | 8 |
| Dolphins | -57.1% | 32 | 27.5% | 26 | -77.5% | 30 | 0.0% | 16 |
2021 NEFF Ratings – Season to Date
| Team | Total NEFF | Rank | ONEFF | Rank | DNEFF | Rank | STNEFF | Rank |
|---|---|---|---|---|---|---|---|---|
| Bills | 50.9% | 1 | 59.8% | 2 | -9.3% | 1 | -6.7% | 22 |
| Cardinals | 34.0% | 2 | 57.8% | 5 | -35.0% | 6 | 23.3% | 2 |
| Saints | 28.3% | 3 | 49.5% | 9 | -29.8% | 3 | 16.7% | 4 |
| Cowboys | 18.6% | 4 | 61.3% | 1 | -45.5% | 15 | 1.7% | 14 |
| Buccaneers | 16.3% | 5 | 58.0% | 3 | -46.3% | 17 | 8.3% | 9 |
| Browns | 16.0% | 6 | 55.5% | 7 | -40.5% | 11 | -3.3% | 17 |
| Rams | 13.4% | 7 | 58.0% | 3 | -39.0% | 8 | -24.2% | 31 |
| Bengals | 9.1% | 8 | 44.0% | 14 | -39.5% | 9 | 11.7% | 6 |
| Broncos | 4.9% | 9 | 35.3% | 25 | -26.3% | 2 | -15.8% | 29 |
| Ravens | 4.6% | 10 | 48.0% | 10 | -41.3% | 12 | -9.2% | 25 |
| Chiefs | 4.3% | 11 | 56.0% | 6 | -60.5% | 31 | 27.5% | 1 |
| Chargers | 4.0% | 12 | 53.0% | 8 | -46.5% | 19 | -10.0% | 26 |
| Vikings | 2.0% | 13 | 46.5% | 11 | -47.0% | 20 | 7.5% | 10 |
| Panthers | 1.4% | 14 | 40.3% | 19 | -31.3% | 4 | -25.8% | 32 |
| Eagles | 0.9% | 15 | 43.8% | 15 | -46.3% | 17 | 10.8% | 8 |
| 49ers | 0.0% | 16 | 46.3% | 12 | -46.0% | 16 | -0.8% | 15 |
| Colts | -3.4% | 17 | 36.5% | 24 | -43.0% | 14 | 11.7% | 6 |
| Seahawks | -6.3% | 18 | 44.5% | 13 | -48.5% | 25 | -5.0% | 19 |
| Patriots | -7.4% | 19 | 24.8% | 29 | -33.3% | 5 | 6.7% | 12 |
| Steelers | -8.0% | 20 | 33.0% | 26 | -39.5% | 9 | -1.7% | 16 |
| Titans | -8.9% | 21 | 42.8% | 16 | -48.3% | 24 | -7.5% | 24 |
| Bears | -9.4% | 22 | 24.8% | 29 | -37.5% | 7 | 15.0% | 5 |
| Raiders | -11.1% | 23 | 39.0% | 21 | -47.3% | 22 | -5.0% | 19 |
| Falcons | -13.7% | 24 | 39.5% | 20 | -50.5% | 27 | -3.3% | 17 |
| Packers | -14.0% | 25 | 40.5% | 18 | -47.0% | 20 | -19.2% | 30 |
| Lions | -14.6% | 26 | 37.3% | 23 | -48.0% | 23 | -6.7% | 22 |
| Giants | -19.1% | 27 | 38.0% | 22 | -61.5% | 32 | 22.5% | 3 |
| Football Team | -20.0% | 28 | 41.0% | 17 | -54.5% | 28 | -13.3% | 27 |
| Texans | -22.6% | 29 | 28.0% | 28 | -50.0% | 26 | -5.8% | 21 |
| Jaguars | -30.6% | 30 | 30.5% | 27 | -59.5% | 30 | 7.5% | 10 |
| Jets | -32.9% | 31 | 12.0% | 32 | -42.5% | 13 | 5.8% | 13 |
| Dolphins | -41.7% | 32 | 23.8% | 31 | -56.3% | 29 | -13.3% | 27 |