NFL Quarterbacks are starting to suck.
Losing great signal callers like Peyton Manning is not helping. Neither is the aging of Hall of Famers like Aaron Rodgers and Tom Brady– Brady had his second worse season to date (excluding 2008 when he played only one game). Nor is the production of mediocre quarterbacks from the college ranks– Johnny Manziel, Robert Griffin III, Tim Tebow, Blaine Gabbert and Christian Ponder were all first-round picks since 2010. Injuries have also taken their toll– Aaron Rodgers, Teddy Bridgewater, and Deshaun Watson all missed significant time this year.
In 2007, six NFL signal callers had a QBR over 70. Seven achieved the same feat in 2009. Since then, the number never went below three except for this year. The two year moving average of the number of QBs with a QBR over 70 has declined or stayed the same every year since the 2009/2010 seasons.
In 2007, only one quarterback measured by ESPN has a QBR below 40. That number has risen to at least three a year every year except 2010, 2015 and 2016. 2017 was the first year with multiple QBs below 30.
Finally, the NFL QBR averaged to 57 from 2007 to 2009. In 2017 it fell off to 52, the lowest ever recorded. If you ranked the twenty-five best QBRs in 2007 and the twenty-five best in 2017 and compared them, only four of the ranks would improve. Every other would stay the same or digress (example, the third best QBR got worse from 2007 to 2017).