U.S. over USSR, Hockey, Lake Placid 1980
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The most famous hockey game ever wasn't for the gold, but it still ranks at the top. The Russian team was filled with hard-bitten Red Army veterans who dominated the sport, while the U.S. squad was a ragtag collection of college kids. The game wasn't even shown live, but after Mike Eruzione gave the U.S. a 4-3 triumph, the Miracle on Ice became the greatest upset in the history of sports.