Did a quick Wikipedia search and came up with this. 3 times as the "1" seed, the Hawks lost to the "4" seed. In those days, you only played your division until the conference finals. 1986, actual conference match up, 2 vs. 8 1991, actual conference match up, 1 vs. 7 1993, actual conference match up, 1 vs. 8 I vaguely recall the 1991 series, and fully recall the 1993 upset, but never realized the circumstances fully.