Best rivalries

[sikax]

NBA
Lakers/Celtics
Bird/Magic
Wilt/Russell
Bulls/Knicks
Bulls/Heat
Bulls/Pacers
Bulls/Pistons
Kings/Lakers
Spurs/Mavs
Pacers/Heat
Pacers/Pistons
Reggie Miller/John Starks--Spike Lee--all Knicks

NFL
Raiders/Patriots
Raiders/Broncos
Raiders/Browns
Raiders/Chiefs
Raiders/Chargers
Raiders/Steelers

Packers/Bears
Cowboys/49ers
Cowboys/Eagles
Cowboys/Redskins
Eagles/Giants
Steelers/Ravens
Jets/Patriots
Peyton/Brady

MLB
Dodgers/Giants
Red Sox/Yankees
A's/Angels
Cubs/Cardinals
Reds/Pirates
White Sox/Twins
Phillies/Mets

College football
Ohio State/Michigan
Alabama/Auburn
Wisconsin/Minnesota
Northwestern/Illinois
Oklahoma/Texas
Notre Dame/USC

College basketball
Duke/North Carolina
Georgetown/St. John's
Georgetown/Villanova
Cincinnati/Xavier
Kansas/Missouri
Kentucky/Florida
Kentucky/Louisville

Boxing
Ali/Frazier

What else?

[BruceSmith78]

The Bulls and Pistons had a pretty heated rivalry back in Isiah Thomas' day. Don't Duke and UNC have a college basketball rivalry? Reggie Miller and Spike Lee? The Spurs and Mavs had a thing for a while in the mid 2000's. Phillie's fans and Mets' fans tend to dislike each other. Pretty much every team in the NFC East that's not from Dallas has a rivalry with the Cowboys.

[Cassius Clay]

Ali/Frazier

[sikax]

The Bulls and Pistons had a pretty heated rivalry back in Isiah Thomas' day. Don't Duke and UNC have a college basketball rivalry? Reggie Miller and Spike Lee? The Spurs and Mavs had a thing for a while in the mid 2000's. Phillie's fans and Mets' fans tend to dislike each other. Pretty much every team in the NFC East that's not from Dallas has a rivalry with the Cowboys.

I don't remember too much of a Spurs/Mavs thing. But since you're in the area I'll take your word for it.

[Blade Azaezel]

Soccer
Everton/Liverpool
Celtic/Rangers
Real Madrid/FC Barcelona
Manchester United/Manchester City

Cricket
England/Australia

International Soccer
England/Germany
Germany/Netherlands

Rugby
New Zealand/Australia
England/Wales
England/Scotland

Ice Hockey
USA/Russia

[sikax]

I'll take your word for all that...whatever it is.