Welcome back to STEP Differential. STEP stands for S ack + T urnover (x2) + E xplosive P lay Differential. Make sure you’re ...

While many top defenses had a forgettable week, the Chargers and Bears showed out. Here's where all 32 units rank ahead of Week 17.

Widely consumed and oft-criticized, Pro Football Focus' grades have become catnip for NFL fans. Here's how the evaluations ...

Overall, we didn’t see the best of NFL defenses this past week. Twelve of the 28 teams in action scored at least 28 points. Seven put up 34 or more points. So, not exactly what you’d expect as we dive ...