The league has been trying to legislate big hits out of the game. They want to make the game safer. This is fine; nobody wants to see people get hurt, and now there’s a greater awareness of the potential dangers of head trauma. But I notice that as they’ve changed the rules, it’s having an impact on what we’re seeing on the field.

The big blowup hits (especially on receivers running across the middle of the field) and helmet-to-helmet collisions are being phased out of the game, but those are the hits that have tended to generate a lot of incompletions, fumbles and interceptions. So as those plays have been outlawed, we’re also seeing declines in turnovers.

In each of the last two years, teams have averaged under 9 fumbles per season. I think those are the two lowest totals in league history. Back in the first three seasons of this century, teams were averaging over 12 fumbles per year.

Similarly, teams have averaged only 13 interceptions the last two years. I believe those are the two lowest totals in the modern era. Go back 15 years, and teams were averaging 17 interceptions per season.

With fewer takeaways (and also with changes to touchback rules) teams are also reasonably scoring fewer touchdowns on returns. Teams have averaged about 3 such touchdowns per year now, with the averages the last two years being two of the three lowest of the century. Go back to the start of the 32-team era, and teams were averaging almost 4 such touchdowns per season. (On the touchdown figures below, they include safeties and scores on returns of failed conversions – awarding 2 points for each.)

Sacks have been OK. Defenses averaged 37 last year, which is an above-average total in comparison to the other seasons this century.

But scoring for defenses in typical fantasy leagues is down. For those using standard basic scoring (6 points for touchdowns, 2 for takeaways and 1 for sacks) the three lowest-scoring seasons for defenses have come in the last three years.

DEFENSIVE AVERAGES SINCE 2000
YearTDFumIntSackF Pts
20003.5713.017.139.8121.5
20013.9612.417.638.6122.3
20023.7812.416.536.8117.3
20033.7811.616.834.1113.7
20043.9111.816.437.4117.2
20053.1512.115.836.9111.7
20063.4711.816.336.3113.2
20074.3811.816.734.4117.8
20083.9710.314.532.4105.8
20093.5210.816.434.4110.0
20103.8210.816.035.3111.9
20113.699.515.837.1109.8
20124.3210.314.636.5112.3
20134.059.815.740.5115.7
20143.439.614.137.9105.8
20153.559.613.637.1104.8
20162.668.813.034.994.4
20173.298.613.437.3101.2

Looking at the 55 defenses since 2000 that have finished with under 80 points in a season, half have come from the last four years (in bold). The other half comes from the previous 14 years combined. I’ve got the 2017 season tagged with black dots.

The Raiders have Khalil Mack (pictured), who’s one of the half dozen best defensive players in the league. But that didn’t stop them from finishing with some of the worst defensive numbers by any team in the last 18 years.

LOW-SCORING DEFENSES SINCE 2000
YearTeamTDFumIntSackPoints
2016NY Jets1482757
2006Washington2661957
2016Cleveland13102658
2015San Francisco1392858
2017• Oakland0953159
2012Kansas City1672761
2014Oakland2592262
2012Philadelphia1583062
2012Oakland08112563
2005New Orleans09102563
2009Jacksonville010151464
2008Denver2762664
2017• Cleveland1673466
2010Houston05133066
2008Washington15132466
2015Dallas2383167
2000Minnesota01083167
2017• NY Jets09112868
2013Houston2473268
2010Jacksonville15132668
2015Chicago0983569
2004Oakland1992569
2003Houston18141969
2012Detroit06113470
2016Jacksonville2673371
2010Denver28102371
2009St. Louis11282571
2014New Orleans05123472
2012Jacksonville111122072
2016LA Rams18103173
2014NY Jets0764573
2016New Orleans01293074
2009Washington06114074
2017• Indianapolis17132575
2016San Francisco010103375
2016Cincinnati03173375
2014Washington01273775
2013San Diego16113575
2007Philadelphia08113775
2017• San Francisco110103076
2016Detroit34102676
2016Dallas01193676
2003San Diego17133076
2009Oakland01283777
2000Arizona210102577
2015San Diego19113278
2011Cleveland11193278
2008Detroit11643078
2001Minnesota21083078
2017• NY Giants26132779
2016Indianapolis2983379
2016Houston26113179
2016Chicago3383779
2004Dallas09133379
2003Arizona210132179

—Ian Allan