The tight clustering of implied probabilities around 25-27% for several Week 2 D/ST units stems from the inherent variance in fantasy scoring, where sacks, turnovers, and points allowed fluctuate sharply from week to week. Traders see comparable upside for the Browns, Cowboys, and Broncos based on favorable early-season matchups and solid Week 1 defensive showings, while a broad group including the Bills, Lions, Eagles, and Chiefs sits just behind due to similar rest advantages and opponent weaknesses. No single unit has separated clearly, as historical single-week D/ST leader data shows frequent upsets driven by unpredictable big plays and weather or travel factors that can shift outcomes rapidly. This setup leaves room for late roster news or injury designations to alter the field.