The third tiebreaker is record against common opponents, and here’s where it gets interesting. This tiebreaker applies only if the two teams that are tied have four common opponents. The Ravens and Bills currently do not, so this criteria doesn’t apply now, but it will by season’s end. By then, the Ravens and Bills will have both played the Cincinnati Bengals, Oakland Raiders, Indianapolis Colts and Miami Dolphins. Again, if both the Ravens and Bills win out, the Ravens would have a 5-0 record against common opponents while the Bills’ mark would be 4-1 (they lost to the Bengals in September). That’s what would get the Ravens that sixth seed over Buffalo.