Bill Vinovich is the head referee for the Bills and Chiefs game in Week 12, and his crew has called the fewest penalties per game in the NFL.
So far in 2017, Vinovich's crew has called 99 penalties in 10 games, good for a 9.9 penalties-per-game average. He's tended to call more penalties on visiting teams than home teams, as 37 flags have been thrown on home teams compared to 62 against teams on the road.
Here are the penalties-per-game figures for the crews of other head referees this season:
Tony Corrente: 16.7
Ed Hoculi: 15.2
Walt Anderson: 14.9
Pete Morelli: 14.5
Terry McAuley: 14.2
Gene Steratore: 14.1
Craig Wrolstad: 12.3
John Parry: 12.2
Clete Blakeman: 12.0
Through 10 games, the Bills have been hit with with an average of 7.4 flags per contest, which is tied for the sixth-highest in the NFL. In their last two blowout losses, Buffalo was called for an average of seven penalties (eight against the Saints, six against the Chargers).
The Chiefs have been called for 81 penalties in 10 games, and the 8.1 penalties-per-game average is the third-highest figure in football.
For a game between two relatively heavily penalized teams, it'd be refreshing if Vinvoch's tendencies continue on Sunday in Week 12.