‘Frazier has been a head coach in the NFL before, going 24-32-1 with a Minnesota Vikings from 2010-2013. The Bills defense has ranked in the top-three in the NFL in yards allowed in two of his four seasons as defensive coordinator (2018 and 2019), and second in points allowed in 2019. This season, the Bills defense ranked 16th overall in points allowed and 14th in yards against.’