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Montana 6 Man
43min - Miami's Liberty City is football's Mecca, home to NFL legends. But the biggest rivalry in this city isn't exactly big - it all starts with a hard-hitting squad of six-year-olds.
Battle of Algiers
22min - Buried deep in the Appalachian hills, an old grudge between two fading towns lives on through baseball's best kept secret - a rivalry at the lowest level of the minor leagues
42min - In Montana, farming and football are life. But as farms dry up and people disappear, two schools that were once bitter rivals must join forces. One team gives hope to two fading towns.
Rivals: The Mercer Cup
22min - The iconic battle between Boca and River isn't on the field, it's in the stands
Rivals: Aphromoo Vs Doublelift
21min - The arena might be online, but in the world of e-sports, this story of teammate-turned-enemy is as real as it gets
Rivals: Aussie Rules
22min - In Florence, history is honoured when fresh blood is spilled in an ancient game
Rivals: Calcio Storico
21min - Australia plays football one way - their way. And the most heated rivalry in the country's most cherished game is marked by broken jaws, foul mouths and phallic tattoos.
22min - Algeria is home to North Africa's biggest soccer derby. This all-consuming rivalry is rooted in love for the game that forged their country through revolution
Rivals: The Boom Squad
21min - Lebanon is a nation defined by religious and political rivalry. And when it comes to the courts, the game between the country's two best basketball clubs is no exception.