Defensive coordinator Aaron Glenn, offensive coordinator Ben Johnson and special teams coordinator Dave Fipp spoke to the media Thursday. Here are my 10 biggest takeaways from those media sessions:
1. What makes this week so tough for Glenn to prepare for? He said San Francisco head coach and play caller Kyle Shanahan is the best offensive mind and play caller in the league in terms of his ability to attack different defensive fronts.
2. When watching the tape of San Francisco’s defense, Johnson said the thing that jumped out to him was the play of linebackers Fred Warner and Dre Greenlaw. Johnson said those two are right there with Baltimore’s Roquan Smith and Patrick Queen as the best linebacker duo in the NFL. The Lions played the Ravens Week 7 and lost 38-6. It was the lowest number of points they’ve scored all season.

