49ers guru Bill Walsh and Rams guru Mike Martz boast egos the size of small countries. And, of course, when St. Louis' franchise resided in Southern California, the Bay Area bunch lived to "beat L.A."
Get Ready to Rumble:
October 6 at San Francisco, December 30 at St. Louis

CHICAGO BEARS versus GREEN BAY PACKERS
All-Time Record: Bears 83, Packers 73, 6 ties
Obvious Reason for Dislike:
For as long as there's been pigskin, these two Midwestern NFL franchises have hated one another and scrapped twice annually in the NFC Central. Now they do so in the new NFC North division.
Intangible Reason for Dislike:
Who in the tiny town of Green Bay, Wisconsin, wouldn't want to stick it to the big city types in Chicago?
Get Ready to Rumble:
October 7 at Chicago (Monday Night Football), December 1 at Green Bay

PITTSBURGH STEELERS versus BALTIMORE RAVENS
All-Time Record: Steelers 8, Ravens 4 (Note: The Cleveland Browns led the all-time series with Pittsburgh, 54-45, before moving the franchise to Baltimore. All Browns records stayed in Cleveland.)
Obvious Reason for Dislike:
AFC Central foes that pride themselves on hitting hard and asking questions later. Now they scrap in the new AFC North division.
Intangible Reason for Dislike:
Before Shannon Sharpe was cut loose because of the salary cap, Sharpe's mouth was a great reason. Now, Brian Billick will have to do.
Get Ready to Rumble:
October 27 at Baltimore, December 29 at Pittsburgh

OAKLAND RAIDERS versus EVERYONE
Obvious Reason for Dislike: The Raiders are, well, the Raiders, and other teams live to knock them off.
Intangible Reason for Dislike:
Playing in front of the Raider
Nation makes even bigger-than-life linemen quake in their cleats. No, really.
Get Ready to Rumble: September through December