There is no debate about the best NFL rivalry of the 21st century: It’s in the AFC North and it’s between the Baltimore Ravens and the Pittsburgh Steelers. The teams have consistently been among the top teams in the league and each have two Super Bowl wins this century. Both pride themselves on physical play and when they meet the hits are louder, the intensity is higher, and the crowds are rowdier. The names say it all: Ray Lewis, Ben Roethlisberger, Bart Scott, Joey Porter, Terrell Suggs, James Harrison. The MMQB gleefully dives into the history of a nasty rivalry.