With their overtime win last night, the Cleveland Cavaliers have a 3-0 lead in their Eastern Conference Final series against the Atlanta Hawks. The Golden State Warriors have a 3-0 lead in their Western Conference Final series against Houston and will try for the four-game sweep tonight.
Since 1958 when the NBA went to a seven-game series for their conference finals, the NBA has never had two teams reach the NBA Finals with both winning their conference finals series via a sweep. Should the Cavs and Warriors both sweep their foes in the conference finals, it would be the first time in NBA history.
In 1958 the two teams that met in the NBA finals, the Boston Celtics and St. Louis Hawks, both won their conference finals series with a 3-0 sweep of their opponents. That was the last time NBA finals opponents each won their previous series with a sweep.