Buffalo Bills coordinator Rick Dennison preparing to face his former team

For the second straight week, a member of the Buffalo Bills coaching staff is squaring off against his former team. One week after first-year head coach Sean McDermott guided the Bills into Charlotte for a matchup with the Carolina Panthers, this time it’s new offensive coordinator Rick Dennison’s turn to face a familiar foe when the Bills welcome the Denver Broncos to New Era Field for a 1 p.m. kickoff Sunday.

Dennison served as Denver’s offensive coordinator for five years, from 2006-2008 and again from 2014-15. Dennison also played linebacker for the Broncos from 1982-90, and was an assistant coach from 1995-2009.

First-year defensive coordinator Leslie Frazier feels that at least one unit…