'The Bills rank 20th in the NFL in yards allowed per game, allowing 358.8. Last year the Bills ranked fourth in the NFL in yards allowed per game, at 312.2. This year, the Bills rank 17th in the NFL in yards allowed per play, at 5.5. Last year the Bills ranked third in the NFL in yards allowed per play, at 4.9. This year the Bills rank 17th in the NFL in third-down conversion percentage, allowing first downs on 39 percent of third-down plays. Last year, the Bills ranked first in the NFL in third-down conversion percentage, allowing first downs on 33 percent of third-down plays.'