The US and the USSR found themselves in a dog fight during the 1972 Gold Medal game. After Doug Collins hit a couple clutch free-throws with three seconds left to give Team USA a one-point lead, there first of the game, the Soviets inbounded the ball and called timeout with one second left—originally the USSR tried to call time between Collins' free throws, but that wasn't allowed.
Amongst the confusion, officials decided to reset the clock at three seconds and allowed the Soviets to inbound the ball again. The horn sounded and the Americans seemed to come away with the gold, but the clock failed to reset to three seconds. Needless to say, the Soviets made a desperation layup and the 1972 US Men's Basketball team have refused to accept the silver medal 'til the very day.