The 1970 Buffalo Bills season was the franchise's first season in the National Football League, and eleventh overall. The team looked to improve on its 4–10 record from 1969 and make the playoffs for the first time since 1966. However, the Bills started out on the wrong foot, losing four of their first five games. After winning two consecutive road games against the Patriots and Jets and suffering a blowout loss to the Cincinnati Bengals, the Bills and Colts played to a 17–17 draw in week 9, Buffalo's first tie since 1968. The Bills would then lose five straight to end the season and finished 3–10–1, for fourth place in the AFC East. Their Week 5 game against the Miami Dolphins would start an era of futility during which the Bills would lose twenty consecutive games against the Dolphins. The Bills would not defeat the Dolphins at any point during the 1970s and next beat Miami in 1980. This would become known as "The Streak".
This would also mark the final season for Bills punter and linebacker Paul Maguire, as he retired after the season to go into broadcasting.