Things I Learned in Fantasy Football: Week 9 Adrian Peterson already has 99 rushing yards against the Bills. Reminder that we know nothing. Maybe it’s time to do away with the narrative that the Buffalo Bills defense is tough on running backs. They’ve allowed 100-plus scrimmage yards and/or a touchdown in back-to-back games — highlighted this week by the ageless Adrian Peterson turning back the clock and running for 108 yards in Week 9. Heading into Sunday, the Bills run defense was pretty middle-of-the-road, ranking 13th in the league.