USSR over U.S., Basketball, Munich 1972
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To this point, the U.S. basketball team had never lost an Olympic game. But one of America's youngest squads faced off against an experienced team of Russians and struggled before a furious comeback gave the U.S. what appeared to be a close win. Officials controversially added three seconds to the clock, giving Russia just enough time to make a basket and get the gold. The U.S. never claimed its silver medals.