What happened: San Francisco's offense was cast as a difficult unit to defend, and one element of it was singled out as "a weapon."

Why it matters: That matters because the 49ers have kept winning through an injury wave and were already 3-0 in recent Wire Report coverage. If that pressure continues, opponents will have even less margin to disrupt San Francisco's unbeaten start.

What to watch: Watch whether the 49ers sustain that start as the roster continues to shift around injuries.