The Western Michigan defense is built on creating havoc and negative plays. Last season, was the most effective they have ever been under Lou Esposito and it showed in the advanced analytics.
The Broncos were 12th in the nation in overall havoc rate, which is defined as the percentage of defensive plays that end in a tackle for loss, sack, pass deflection or interception. The defense was 11th in tackles for loss and sacks and 31st in pass breakups and interceptions.
I'm not in defensive meetings and I don't have All-22 game film, but the defensive backfield has a difficult challenge in this scheme.