USSR over U.S., Basketball, Munich 1972
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.