The Baltimore Ravens and the Pittsburgh Steelers are the best rivalry in the NFL. It doesn't matter whether both, one, or neither is in contention, a Ravens-Steelers game will always be tough and competitive. There have been few blowouts over the past decade, and especially since John Harbaugh and Joe Flacco joined the fray. As Coach Harbaugh likes to say, "Iron sharpens iron," and the Ravens and Steelers are a prime example of this.
In more recent years, the Cincinnati Bengals have become a fixture in the playoff race, winning the division several times and recently beating the Ravens fairly often.