The San Francisco 49ers host the Chicago Bears this Sunday, and it marks Vic Fangio’s first road game against the team he previously worked for as defensive coordinator. Fangio departed the 49ers after the 2014 season, and has been in Chicago ever since. The 49ers have faced the Bears each of the past three years, but all three games were in Chicago.
The Bears defense is currently tops in the league in total efficiency, as well as pass and run defense efficiency individually. It is the culmination of a rebuilding effort that began ion 2015 when Ryan Pace took over as general manager and Fangio took over as defensive coordinator.