What happened: Teams that lost the turnover battle finished 0-13 in the opening slate. Even-margin games split 3-3 to close out the Week 1 schedule.
Why it matters: With openers complete, ball security stands as the early divider between 1-0 and 0-1 starts. Negative-margin starters face immediate pressure to protect possession before the gap widens.
By the numbers: Plus margin: 13-0. Minus margin: 0-13. Even margin: 3-3. Bottom: Patriots and Buccaneers at minus-3.
What to watch: Week 2 tests whether the perfect margin split holds beyond the openers.